Key structure and keyboard device

The utility model discloses a key structure and a keyboard device. The key structure comprises a key bottom plate, a key assembly, a key cap and a balance rod. The key bottom plate comprises a bottom plate and a clamping hook seat, the clamping hook seat is arranged on the bottom plate, the clamping hook seat is provided with an orifice part and a guide part, and the guide part is arranged on one side of the orifice part. The key assembly is arranged on the bottom plate. The key cap is arranged on the key assembly. The balance rod is connected between the key bottom plate and the key cap, the balance rod is provided with a long rod part and two clamping hook parts, the clamping hook parts are arranged at the two ends of the long rod part, and the two clamping hook parts abut against the guide parts and move to be hooked into the hole opening parts. The guide parts are arranged on the two sides of the clamping hook base, the clamping hook parts of the balance rod can move to be hooked into the hole opening par