diff --git a/README.md b/README.md
index 426d764..d941c48 100644
--- a/README.md
+++ b/README.md
@@ -256,7 +256,7 @@ livox_ros_driver only supports the timestamp synchronization function when conne
 | Parameter        | Type     | Description                                                  | Default        |
 | ---------------- | -------- | ------------------------------------------------------------ | -------------- |
 | enable_timesync  | Boolean  | Whether to enable the timestamp synchronization <br>true -- Enable timestamp synchronization<br>false -- Disable timestamp synchronization | false          |
-| device_name      | String串 | Name of the serial device to be connected, take "/ dev / ttyUSB0" as an example, indicating that the device sending timestamp information to livox_ros_driver is ttyUSB0 | "/dev/ttyUSB0" |
+| device_name      | String | Name of the serial device to be connected, take "/ dev / ttyUSB0" as an example, indicating that the device sending timestamp information to livox_ros_driver is ttyUSB0 | "/dev/ttyUSB0" |
 | comm_device_type | Int      | Type of device sending timestamp information<br>0 -- Serial port or USB virtual serial port device<br>other -- not support | 0              |
 | baudrate_index   | Int      | Baud rate of serial device<br>0 -- 2400 <br>1 -- 4800 <br>2 -- 9600 <br>3 -- 19200 <br>4 -- 38400 <br>5 -- 57600 <br>6 -- 115200 <br>7 -- 230400 <br>8 -- 460800 <br>9 -- 500000 <br>10 -- 576000 <br>11 -- 921600 | 2              |
 | parity_index     | Int      | parity type<br>0 -- 8bits data without parity<br>1 -- 7bits data 1bit even parity<br>2 -- 7bits data 1bit odd parity<br>3 -- 7bits data 1bit 0, without parity | 0              |