When a vehicle has been detected in the monitored area, snapshots will be taken and metadata will be saved. It supports overlay of license plate number, violation time, violation location, and parking duration as evidence. It can cover a wider area through its dual-PTZ system, solving vehicle capturing problems including vehicle under occlusion. Based deep learning algorithm, it can offer high accuracy detection rate, instand of traffic police normally posts parking tickets to highly improve the efficiency and reduce the labor costs.