A replaceable panel structure and a panel replaceable moisture sensor, socket, and switch having the replaceable panel structure. The replaceable panel structure includes a base, and a panel body mounted on the base by using several snap structures. The snap structure comprising a slide slot and an engagement portion disposed on the base or the panel body, and a slide fastener disposed on the panel body or the base, the slide fastener is suitable to be inserted in the slide slot and slide back and forth in the slide slot to be engaged with or separated from the engagement portion, and the slide fasteners of the snap structures have consistent sliding directions in the slide slot. The replaceable panel structure replaces the panel and the base in a sliding manner, and has advantages of a simple structure, convenient removal, and stable engagement.