Key module and cleaning machine

The utility model discloses a key module and a cleaning machine. The key module comprises a bottom plate, a key and a pressing assembly, wherein a mounting groove is formed in the bottom plate; the key is accommodated in the mounting groove; the pressing assembly comprises a first pressing piece and a second pressing piece, the first pressing piece is arranged in a manner of covering a notch of the mounting groove, the first pressing piece comprises a first pressing part which abuts against the key, the second pressing piece comprises a second pressing part, and the second pressing part abuts against the first pressing piece; when the second pressing part acts on the second pressing part so that the second pressing part can abut against the first pressing piece, the first pressing part can deform to trigger the key. According to the utility model, the key is sealed in the mounting groove, so that external dust or water is not easy to enter the key, and the waterproof performance of the key is better; moreover