A replaceable panel structure and a socket, switch and humidity sensor with the replaceable panel. The replaceable panel structure includes a base, and a panel main body which is replaceably mounted on the base by a snap structure having first snap structures and second snap structures, wherein each of the first snap structures includes a first elastic snap disposed on the panel main body and a stop block disposed on the base, a first slot fitted with the first elastic snap being formed on one side of the stop block away from the panel main body, the first elastic snap being deformed due to the stop of the stop block and then snapped into or released from the first slot; each of the second snap structures includes a second snap disposed on the panel main body and a second slot disposed on the base and fitted with the second snap, the second snap being able to be inserted into or released from the second slot in a horizontal direction.