diff --git a/docs/simulate-network-chaos-on-kubernetes.md b/docs/simulate-network-chaos-on-kubernetes.md
index aa58cea3..a8de5479 100644
--- a/docs/simulate-network-chaos-on-kubernetes.md
+++ b/docs/simulate-network-chaos-on-kubernetes.md
@@ -230,7 +230,7 @@ Setting `action` to `bandwidth` means simulating bandwidth limit fault. You also
 
 | Parameter | Type | Description | Default value | Required | Example |
 | --- | --- | --- | --- | --- | --- |
-| rate | string | Indicates the rate of bandwidth limit |  | Yes | 1mbps |
+| rate | string | Indicates the rate of bandwidth limit. Allows bit, kbit, mbit, gbit, tbit, bps, kbps, mbps, gbps, tbps unit. bps means bytes per second |  | Yes | 1mbps |
 | limit | uint32 | Indicates the number of bytes waiting in queue |  | Yes | 1 |
 | buffer | uint32 | Indicates the maximum number of bytes that can be sent instantaneously |  | Yes | 1 |
 | peakrate | uint64 | Indicates the maximum consumption of `bucket` (usually not set) |  | No | 1 |