diff --git a/src/views/appComponents/ChargingRanking.vue b/src/views/appComponents/ChargingRanking.vue
index 827f217..1c50b43 100644
--- a/src/views/appComponents/ChargingRanking.vue
+++ b/src/views/appComponents/ChargingRanking.vue
@@ -19,7 +19,11 @@
           <span class="text-[2.75rem] font-600" v-if="index > 2">{{ index + 1 }}</span>
         </template>
         <template #name="{ data }">
-          <span class="text-[#C0EEFF] text-[2.75rem]">{{ data.name }}</span>
+          <Tooltip :text="data.name" position="bottom">
+            <span class="block max-w-[9rem] overflow-hidden text-ellipsis whitespace-nowrap text-[#C0EEFF] text-[2.75rem]">
+              {{ data.name }}
+            </span>
+          </Tooltip>
         </template>
         <template #total="{data}">
             <span class="text-[#C0EEFF] text-[2.75rem]">{{ data.total }}</span>
@@ -47,7 +51,11 @@
           <span class="text-[2.75rem] font-600" v-if="index > 2">{{ index + 1 }}</span>
         </template>
         <template #name="{ data }">
-          <span class="text-[#C0EEFF] text-[2.75rem]">{{ data.name }}</span>
+          <Tooltip :text="data.name" position="bottom">
+            <span class="block max-w-full overflow-hidden text-ellipsis whitespace-nowrap text-[#C0EEFF] text-[2.75rem]">
+              {{ data.name }}
+            </span>
+          </Tooltip>
         </template>
         <template #total="{data}">
             <span class="text-[#C0EEFF] text-[2.75rem]">{{ data.total }}</span>
@@ -60,6 +68,7 @@
   import SvgComponent from "@/components/SvgComponent.vue";
   import RankingTable from "@/components/table/RankingTable.vue";
   import MobileDrawer from "./MobileDrawer.vue";
+  import Tooltip from "./Tooltip.vue";
 
   const columns = [
     { field: "rank", header: "名次", align: "justify-center", width: "6rem" },
diff --git a/src/views/appComponents/Tooltip.vue b/src/views/appComponents/Tooltip.vue
new file mode 100644
index 0000000..404277a
--- /dev/null
+++ b/src/views/appComponents/Tooltip.vue
@@ -0,0 +1,159 @@
+<template>
+  <span
+    ref="triggerRef"
+    class="inline-flex max-w-full min-w-0 align-middle outline-none"
+    tabindex="0"
+    @mouseenter="showTip"
+    @mouseleave="hideTip"
+    @focus="showTip"
+    @blur="hideTip"
+  >
+    <slot></slot>
+  </span>
+
+  <Teleport to="body">
+    <Transition
+      enter-active-class="transition-all duration-150 ease-out"
+      leave-active-class="transition-all duration-150 ease-in"
+      enter-from-class="opacity-0 translate-y-[0.25rem]"
+      leave-to-class="opacity-0 translate-y-[0.25rem]"
+    >
+      <div
+        v-if="visible"
+        ref="tipRef"
+        class="fixed z-[9999] max-w-[min(38rem,calc(100vw-2rem))] px-[1.5rem] py-[1rem] text-[#D9F7FF] text-[2rem] leading-[1.25] break-all pointer-events-none border border-[rgba(132,232,255,0.55)] rounded-[0.75rem] bg-[linear-gradient(180deg,rgba(10,58,132,0.96)_0%,rgba(7,35,98,0.98)_100%)] shadow-[0_0_1.5rem_rgba(68,193,239,0.28),inset_0_0_1rem_rgba(68,193,239,0.14)]"
+        :style="tipStyle"
+        role="tooltip"
+      >
+        <span class="block">{{ text }}</span>
+        <span
+          class="absolute h-[0.85rem] w-[0.85rem] rotate-45 border-[rgba(132,232,255,0.55)] border-solid bg-[rgba(7,35,98,0.98)]"
+          :class="arrowPlacementClass"
+        ></span>
+      </div>
+    </Transition>
+  </Teleport>
+</template>
+
+<script lang="ts" setup>
+  import { computed, nextTick, onBeforeUnmount, reactive, ref } from "vue";
+
+  type TooltipPosition = "top" | "bottom" | "left" | "right";
+
+  const props = withDefaults(
+    defineProps<{
+      text: string;
+      position?: TooltipPosition;
+      delay?: number;
+    }>(),
+    {
+      position: "top",
+      delay: 160,
+    },
+  );
+
+  const triggerRef = ref<HTMLElement | null>(null);
+  const tipRef = ref<HTMLElement | null>(null);
+  const visible = ref(false);
+  const isListening = ref(false);
+  const timer = ref<number | null>(null);
+
+  const gap = 10;
+  const viewportPadding = 8;
+  const tipStyle = reactive({
+    top: "0px",
+    left: "0px",
+  });
+
+  const arrowPlacementClass = computed(() => {
+    const positions: Record<TooltipPosition, string> = {
+      top: "bottom-[-0.48rem] left-1/2 translate-x-[-50%] border-r border-b",
+      bottom: "top-[-0.48rem] left-1/2 translate-x-[-50%] border-t border-l",
+      left: "right-[-0.48rem] top-1/2 translate-y-[-50%] border-t border-r",
+      right: "left-[-0.48rem] top-1/2 translate-y-[-50%] border-b border-l",
+    };
+
+    return positions[props.position];
+  });
+
+  const clearTimer = () => {
+    if (timer.value) {
+      window.clearTimeout(timer.value);
+      timer.value = null;
+    }
+  };
+
+  const clamp = (value: number, min: number, max: number) => Math.min(Math.max(value, min), max);
+
+  const addPositionListeners = () => {
+    if (isListening.value) return;
+    window.addEventListener("scroll", calculatePosition, true);
+    window.addEventListener("resize", calculatePosition);
+    isListening.value = true;
+  };
+
+  const removePositionListeners = () => {
+    if (!isListening.value) return;
+    window.removeEventListener("scroll", calculatePosition, true);
+    window.removeEventListener("resize", calculatePosition);
+    isListening.value = false;
+  };
+
+  const showTip = () => {
+    if (!props.text) return;
+
+    if (visible.value) {
+      calculatePosition();
+      return;
+    }
+
+    clearTimer();
+    timer.value = window.setTimeout(async () => {
+      timer.value = null;
+      visible.value = true;
+      await nextTick();
+      calculatePosition();
+      addPositionListeners();
+    }, props.delay);
+  };
+
+  const hideTip = () => {
+    clearTimer();
+    visible.value = false;
+    removePositionListeners();
+  };
+
+  const calculatePosition = () => {
+    if (!triggerRef.value || !tipRef.value) return;
+
+    const triggerRect = triggerRef.value.getBoundingClientRect();
+    const tipRect = tipRef.value.getBoundingClientRect();
+    let top = triggerRect.top - tipRect.height - gap;
+    let left = triggerRect.left + (triggerRect.width - tipRect.width) / 2;
+
+    switch (props.position) {
+      case "bottom":
+        top = triggerRect.bottom + gap;
+        left = triggerRect.left + (triggerRect.width - tipRect.width) / 2;
+        break;
+      case "left":
+        top = triggerRect.top + (triggerRect.height - tipRect.height) / 2;
+        left = triggerRect.left - tipRect.width - gap;
+        break;
+      case "right":
+        top = triggerRect.top + (triggerRect.height - tipRect.height) / 2;
+        left = triggerRect.right + gap;
+        break;
+      case "top":
+      default:
+        break;
+    }
+
+    tipStyle.top = `${clamp(top, viewportPadding, window.innerHeight - tipRect.height - viewportPadding)}px`;
+    tipStyle.left = `${clamp(left, viewportPadding, window.innerWidth - tipRect.width - viewportPadding)}px`;
+  };
+
+  onBeforeUnmount(() => {
+    hideTip();
+  });
+</script>