Provided is a microswitch wherein the versatility of a lever member can be prevented from being reduced while the rigidity of the lever member is improved. The microswitch is provided with a housing containing a switch mechanism, a plunger which transmits power to the switch mechanism, and a lever member, the base end of which is supported by the housing. In the microswitch, the tip end of the plunger abuts with the bottom surface of the lever member at an intermediate position in the longitudinal direction of the lever member, and an object to be detected can abut with the top surface of the lever member on the tip end side of the lever member. Further, a first reinforcement portion is formed on the top surface of the lever member, excluding an object abutment portion with which the object to be detected is to be abutted, and a second reinforcement portion is formed on the bottom surface of the lever member, excluding a plunger abutment portion.