Dust collector floor brush with switchable rolling brush bodies

The utility model provides a dust collector floor brush assembly with switchable rolling brush bodies. Wherein the two rolling brush bodies are located in the negative pressure cavity, the rolling brush body support is arranged at one side end of each rolling brush body and used for containing the rolling brush body, the rolling brush body gear is arranged at the other side end of each rolling brush body, and the gear box and the rolling brush body gear are installed in a matched mode. The gear box comprises a gear box support, a circle of rack arranged on the inner surface of the gear box support, a gear box gear arranged in the middle of the gear box support and limiting pins symmetrically arranged. The gear box gear is installed on the gear box support through a shaft, and after the rolling brush body arranged on the rolling brush body support transversely penetrates through the negative pressure cavity through the round hole in the left side plate of the floor brush, the rolling brush body gear is connect