The present disclosure discloses a waterproof button structure, including a button main body, a shell and a shaft sleeve, wherein a button mounting slot is reserved on the shell; a vertical column is arranged in the button mounting slot; the vertical column is provided with a through hole longitudinally penetrating through the vertical column; the button main body includes a pressing portion and a shaft portion; a bottom surface of the pressing portion is provided with a first annular groove; a second annular groove is formed between the vertical column and an inner wall of the button mounting slot.