The invention provides an automatic insulation protecting device for a compression spring resetting type breaker and belongs to the field of machines. A lower support is arranged at the static contact end of a switch body support. A front support is arranged on the lower support. Fixed pulleys are arranged at the front side of the front support. A wire guide plate is arranged on the upper portion of the front support. A protecting sleeve rod is arranged at the upper end of the front support. The upper end of the protecting sleeve rod and the upper end of the front support are hinged into one through a hinge. A static contact protecting sleeve is arranged at the position, corresponding to the static contact position, of the head end of the protecting sleeve rod. A rope fixing ring is arranged on an operation handle rotating rod. A rope is arranged, and the head end of the rope is fixedly connected with the tail end of the protecting sleeve rod. The rope sequentially penetrates through the fixed pulleys of the rope guide plate, the front support and the body support. The tail end of the rope is fixedly connected to the rope fixing ring in a winding mode. The portion, between the tail end of the protecting sleeve rod and the front support, of the rope is sleeved with a spring. The automatic insulation protecting device is capable of acting in harmony with on/off operation of a switch is arranged, and therefore the technical effect of breaker protection is achieved.