An electrical socket safety device is disclosed which comprises a base plate for an electrical receptacle exposing multiple electrical sockets thereon, a sliding plate slidably engaging the base plate for covering the electrical sockets, a spring urged to protrude through a slot in the base plate, a concave space on the sliding plate for accommodating the protruding spring, the concave space forcing a first slope on the spring to depress the same into the slot when the sliding plate sliding in one direction, the concave space forcing a second slope of the spring to depress the same into the slot when the sliding plate sliding in an opposite direction, wherein the engagement of the concave space and the spring holds the sliding plate in a predetermined position, and the disengagement of the concave space and the spring requires a predetermined amount of force.