To provide an expansion valve mounting structure capable of simply realizing mounting of a thermal expansion valve to an evaporator at low cost.

According to the expansion valve mounting structure of the thermal expansion valve 1, a body of the thermal expansion valve 1 is constituted by a piping connection plate 70 and a coolant pipe 60 serves as well as a stopper for preventing slip-off of the thermal expansion valve 1. As a result, the number of parts is reduced and the expansion valve mounting structure can be simply realized at low cost.