Abstract: Based on the research of parahydrogen refrigeration technology with conversion adiabatically,the model of parahydrogen refrigeration with conversion continually was founded in this paper. The conversion process was analyzed and the data of refrigerating capacity was obtained. The results show that there is large refrigerating capacity during parahydrogen continual conversion process,and this can be designed as a vapor cold shell(VCS)of the liquid hydrogen vessel to decrease the evaporation loss.