The invention discloses a dustproof waterproof electrode slice collection device for a wearable device. The device comprises a device lower shell which is in contact with the human body and an electrode slice, a center hole is formed in the device lower shell, and the electrode slice is fixed into the center hole; the bottom surface of the electrode slice slightly protrudes from the bottom surfaceof the device lower shell, an insulation ring is arranged between the electrode slice and the device lower shell, and the electrode slice is fixed into the device lower shell through an electric slice pressing slice; an insulation ring is arranged between the electrode slice pressing slice and the electrode slice, and the level of waterproof dustproof performance between the electrode slice and the device lower shell is above IP67. According to the dustproof waterproof electrode slice collection device for the wearable device, clamping lugs of the electrode slice pressing slice are welded onto the device lower shell through laser, welding is firm, the dustproof waterproof effect is guaranteed, the device lower shell, the insulation ring, the electrode slice, the insulation ring and the electrode slice pressing slice are arranged in a three-dimensional dislocation mode in sequence, insulation between the electrode slice and the device lower shell is guaranteed, so that all parts are tightly and firmly assembled together, and the total space is super thin.