Pneumatic dust collector

The utility model provides a pneumatic dust collector which comprises a power device, a connecting pipe and a pneumatic floor brush head. The power device is used for generating a power source; one end of the connecting pipe is connected with the pneumatic floor brush head, the other end of the connecting pipe is connected with the power device, and the connecting pipe is used for conveying dust and foreign matters sucked by the pneumatic floor brush head into the power device; the pneumatic floor brush head comprises a shell, a connector pipe and a brush head assembly, a cavity, a foreign matter storage cavity and a suction pipe are arranged in the shell, the foreign matter storage cavity is arranged on one side of the cavity, one end of the suction pipe is communicated with the foreign matter storage cavity, the other end of the suction pipe is communicated with the connector pipe, and the connector pipe is fixedly arranged at the top of the shell. The connector pipe is communicated with the connecting pipe