Point contact type switch capable of alternately switching on circuits

The utility model relates to a point contact type switch capable of alternately switching on circuits. With the point contact type switch capable of alternately switching on circuits adopted, technical problems in the prior art can be effectively solved. The point contact type switch can alternately switch on devices connected with the point contact type switch, and the point contact type switch is convenient and practical. The point contact type switch is characterized in that a connecting rod is fixed to the middle of the lower end of a switch button; a shaft connecting piece is fixed at the lower end of the connecting rod; a driving shaft is fixed at the lower end of the shaft connecting piece through a first one-way bearing; a cavity which is located at the lower end of the driving shaft is arranged in a switch casing; the outer edge of the lower part of the driving shaft is a spiral surface; the spiral surface is sleeved with a transmission sleeve; the inner sidewall of the transmission sleeve is a threaded notch matched with the spiral surface; the transmission sleeve is sleeved with a second one-way bearing; the rotation directions of the first one-way bearing and the second one-way bearing are opposite to each other; the second one-way bearing is sleeved with a fixing disc; the upper surface of the fixing disc is provided with insulating wires which divide the upper surface into n parts; the fixing disc is provided with conductive layers which are arranged between the insulating wires; the conductive layers are connected with wiring columns at the exterior of the point contact type switch through wires; and a conductive plate penetrates the driving shaft above the transmission sleeve.