The invention relates to a parking lot intelligent lane system. The parking lot intelligent lane system is composed of an MTC (manual toll collection) device, a gate, a camera, a ground sensing detector, an ETC (electronic toll collection) device, an ETC system front-end road side unit (RSU) and a fusion controller; the ground sensing detector comprises a first ground sensor, a second ground sensor, a third ground sensor, a fourth ground sensor and a fifth ground sensor; the fusion controller is connected with the first ground sensor, the second ground sensor, the fifth ground sensor, the MTC device, the ETC device, the camera and the gate, and is used for realizing the linkage of the MTC device and an ETC system; the fusion controller summarizes signals generated in the passing process of vehicles, and judges the working state of the gate according to designed rules; the third ground sensor is connected with the ETC device; the fourth ground sensor is connected with the MTC device; and the fifth ground sensor is connected with the gate. With the parking lot intelligent lane system adopted, the linkage of the MTC device and the ETC device is realized, and the high-speed passage of the vehicles under an ETC mode can be ensured, and the passage efficiency of the vehicles can be improved.