The utility model discloses a PIC-based star-delta intelligent soft starting controller, and relates to the field of sensor signal acquisition processing technology. The controller comprises a PIC single-chip microcomputer, a first contactor, a second contactor, a third contactor, a first intermediate relay, a second intermediate relay, a fuse, a breaker, a thermorelay, a starting button, a stop button and a motor. A coil of the first intermediate relay and a coil of the third intermediate coil are connected to the PIC single-chip microcomputer. The PIC single-chip microcomputer is connected to a normally-closed contact of the second contactor till a firing line end. A current transformer is connected to a main loop via the PIC single-chip microcomputer. One end of the motor is connected to the themorelay, the first contactor, the breaker and the fuse successively till the fire line end. The other end of the motor is connected to the third contactor. The second contactor is connected between the first contactor and the third contactor. The controller is simple to install, low in cost, and highly stable; real-time switching can be achieved; and service lifetime of a system is extended.