diff --git a/.changeset/fix-lnglat-distance-units.md b/.changeset/fix-lnglat-distance-units.md
new file mode 100644
index 0000000000000000000000000000000000000000..306aca574a93afcfd7131679aca8904f652d3b99
--- /dev/null
+++ b/.changeset/fix-lnglat-distance-units.md
@@ -0,0 +1,9 @@
+---
+'@antv/l7-utils': patch
+---
+
+fix(utils): respect the units parameter in lnglatDistance
+
+`lnglatDistance` 接收 `units` 参数但内部用 `(units = 'meters')` 覆盖了它，导致
+调用方传入的单位被忽略，函数始终返回米。现将 `units` 改为默认值 `'meters'` 并
+直接透传给 `radiansToLength`，使 `kilometers` 等单位正常生效。
diff --git a/packages/utils/__tests__/geo.spec.ts b/packages/utils/__tests__/geo.spec.ts
index b70448a88a6f05776fa4dfe98b4d64db11ddf33d..44a3aa9160650635a02b6f52b80563021a36c73f 100644
--- a/packages/utils/__tests__/geo.spec.ts
+++ b/packages/utils/__tests__/geo.spec.ts
@@ -1,5 +1,5 @@
 import type { IBounds } from '../src/geo';
-import { boundsContains, padBounds } from '../src/geo';
+import { boundsContains, lnglatDistance, padBounds } from '../src/geo';
 
 describe('geo', () => {
   it('padBounds', () => {
@@ -30,4 +30,15 @@ describe('geo', () => {
     expect(boundsContains(bounds, b2)).toEqual(true);
     expect(boundsContains(bounds, b3)).toEqual(false);
   });
+
+  it('lnglatDistance defaults to meters', () => {
+    const meters = lnglatDistance([116, 39], [117, 39]);
+    expect(meters).toBeCloseTo(86414.37, 1);
+  });
+
+  it('lnglatDistance respects the units parameter', () => {
+    const meters = lnglatDistance([116, 39], [117, 39], 'meters');
+    const kilometers = lnglatDistance([116, 39], [117, 39], 'kilometers');
+    expect(kilometers).toBeCloseTo(meters / 1000, 5);
+  });
 });
diff --git a/packages/utils/src/geo.ts b/packages/utils/src/geo.ts
index 50d8d000108cd6a4085362410c9e9294b78b71f7..a4a14a90cdfc28e3f6a5077230aec54648d0d6af 100644
--- a/packages/utils/src/geo.ts
+++ b/packages/utils/src/geo.ts
@@ -213,7 +213,7 @@ export function amap2UnProject(x: number, y: number): [number, number] {
 export function lnglatDistance(
   coordinates1: [number, number],
   coordinates2: [number, number],
-  units?: Units,
+  units: Units = 'meters',
 ): number {
   const dLat = degreesToRadians(coordinates2[1] - coordinates1[1]);
   const dLon = degreesToRadians(coordinates2[0] - coordinates1[0]);
@@ -223,11 +223,7 @@ export function lnglatDistance(
     Math.pow(Math.sin(dLat / 2), 2) +
     Math.pow(Math.sin(dLon / 2), 2) * Math.cos(lat1) * Math.cos(lat2);
 
-  return radiansToLength(
-    2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)),
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    (units = 'meters'),
-  );
+  return radiansToLength(2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)), units);
 }
 
 export function project(lnglat: [number, number]) {