A control system framework of an electric injection molding machine comprises a host computer and a slave computer, wherein the host computer and the slave computer are in communicating connection with each other. The host computer is in communicating connection with the slave computer through EtherCAT or CAN-Open, and a human-machine interface HMI is configured on the host computer. A program onthe host computer transmits shaft technological parameters set on the HMI to the slave computer in a communication mode through the EtherCAT or the CAN-Open. The slave computer feeds the real-time state of the slave computer back to the host computer through the EtherCAT or the CAN-Open. A communication master station and one or more communication slave stations are arranged on the slave computer,the communication master station and the host computer conduct data reception and feedback through the EtherCAT or the CAN-Open, and the communication master station and the communication slave stations conduct data distribution and feedback through an interior high-speed bus. By the adoption of the control system framework of the electric injection molding machine, the performance requirement ofthe host computer can be reduced, the cost of the host computer can be reduced, the injection molding pressure control is more accurate, the machinery running speed is smoother, the V-P switching response is more timely, and the precision and the stability of an injection product are improved.