To provide a compact push operation regulation device capable of efficiently regulating a push operation even in a restricted space etc., and a shift switching device with the push operation regulation device.

An actuator which is constituted by mainly including a cam shaft 53 includes four (only 2 of which are illustrated) cams (62) one of which is assigned to one switch (2 as representative), and each of the cams (62) includes a cam surface with a small diameter, and a cam surface with a large diameter, respectively. Then, the cam surface with the large diameter is set for a switch (2) for regulation of a push operation, and the cam surface with the small diameter is set for switches except the switch for regulation of the push operation. Here, a push operation for regulation is regulated by the number of actuators less than the number of switches. According to the present example, for maximum of four switches, it becomes possible to simultaneously regulate their push operations by a single actuator.