Folding mechanism and treadmill

The utility model belongs to the technical field of fitness equipment, and discloses a folding mechanism and a treadmill. The folding mechanism comprises a fixing base and a stand column, the stand column is rotationally arranged on the fixing base, and a shaft sleeve is arranged on the inner side of the fixing base; the pedal is arranged on the fixed seat; one end of the connecting rod assembly is connected to the pedal, and the other end penetrates through the shaft sleeve, the stand column and the fixing base; the reset piece is arranged in the shaft sleeve and arranged on the connecting rod assembly in a sleeving mode, and the two ends of the reset piece abut against the connecting rod assembly and the inner wall of the shaft sleeve respectively; the pedal is configured to rotate relative to the fixing base and drive the connecting rod assembly to rotate and move relative to the fixing base, so that the stand column rotates relative to the fixing base and is folded. According to the folding mechanism, a u