In order to meet the needs of Antarctic resource development, in order to solve the problems of the disorderly development of the deshelling processing mode in the current shipborne processing of Euphausia superba, and the lack of key technology for proportioning process of E. superba and seawater, which results in poor operation stability of the deshelling processing equipment, in this study, according to industrial development needs of E. superba processing and E. superba deshelling production line on a domestic E. superba professional fishing and processing ship, a standardized processing mode has been established by using mechanism analysis method. Using mechanism analysis method, the law of conservation of mass, Dixon's criterion and data fusion filtering algorithm, etc., the data processing method of the acquisition signal of the feeding system in E. superba deshelling process , the mathematical model of the feeding system’s dynamic proportioning process of E. superba and seawater, the control model and workflow of E. superba to seawater were established, and using the E. superba deshelling processing equipment on a domestic E. superba professional fishing and processing ship, the research on the application effect of the key technology of proportioning process of E. superba and seawater was carried out. The results showed that based on the process parameters set in the experiment, the value of proportioning process of E. superba and seawater fluctuated around the preset value, and the maximum change was controlled within ±2%. Among them, in the starting state, the regulation time of seawater flow and E. superba’s mass rate was about 119 seconds, and both can operate stably according to the preset parameters. In the running state, the regulation time of seawater flow and E. superba’ s mass rate was about 32 seconds, and then it showed periodic and stable changes with the change of liquid level. The deviation of seawater flow rate was –0.48 to 0.42 m³/h, and the deviation of shrimp mass rate is –0.48 to 0.42 m³/h., meat yield increased by 0.7%. The results indicated that the key technology of proportioning process of E. superba and seawater for E. superba deshelling processing in the standardized shipborne processing mode of this study can ensure the stable value of proportioning process of E. superba and seawater. The maximum change of the proportioning process of E. superba and seawater in this research was controlled within ±2%, meat yield increased by 0.7%. This technology can ensure the stable operation of proportioning process of E. superba and seawater deshelling processing, and meet the needs of E. superba deshelling process development.