The invention discloses a code remote upgrading system comprising a central server, a GPRS (General Packet Radio Service) module and a controller master chip. The central server analyzes the compiled code file into binary codes and encrypts the codes, then, transmits the codes to an IP (Internet Protocol) address corresponding to the GPRS module; the GPRS module is connected with the central server through a network, receives and analyzes the code file of the TCP (Transmission Control Protocol)/IP; the controller master chip compiles the bootloader codes, decrypts the binary code file received by the GPRS module, and guides storage and running of the code file. The code remote upgrading system has the characteristics of being simple to operate, high in reliability and low in cost.