The invention discloses a device capable of dynamically managing motor vehicle parking and a parking space. The device comprises a parking space lock, a background server, parking management software and a user terminal (smart phone, NB, PC, PAD), wherein the parking space lock comprises a parking space lock electromechanical part, a sensing module, a chip processor, a positioning module, and a communication module; the parking management software is installed at the background server, and a user operates at the user terminal; the parking space lock is communicated with the background server through the internet; the sensing module in the parking space lock senses parking space information (state information such as use, idle and damage), the parking space information is sent to the background server in real time after being processed through the chip processor; position information sent from the positioning module is sent to the background server in real time by the communication module after being processed by the chip processor; at the same time, the parking space ID number, the parking time and the vehicle picking time and other information are sent to the background server; the background server comprehensively processes the parking space state information, the parking space management user terminal information and the parking user terminal information, and third-party payment platform information is added when payment is needed, and then a corresponding locking or unlocking instruction is sent to the parking space lock.