A manufacturing method of a switch device having changeable distances involves uniformly arranging more than two throws on the same circumference and then fixing the throws onto corresponding circular carriers. Included further is fixing a number of throws on the inner cylinder surface of a flat cylinder plate body, and fixing the poles in cylinder shape on to the top of the carrier in a cap shape which can be worn on the tip of a single finger. One end of the lead wires is connected to respective throws and pole, the other end is connected to the pin of the interface of the controlled object by fixing or inserting in order to form the switch device. Distances between the throws and the poles are variable.