首先查看usb设备 pi@raspi ~ $ lsusb Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. Bus 001 Device 004: ID 0ace:1215 ZyDAS ZD1211B 802.11g 注意，最后一行为无线网卡信息 打开https://wiki.debian.org/WiFi，查看是否有对照型号的固件 安装对应的固件 pi@raspi ~ $ sudo apt-get install zd1211-firmware 完成后使用iwconfig检查是否已经安装成功 pi@raspi ~ $ iwconfig wlan0 IEEE 802.11bg ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off lo no wireless extensions.