The test of nutritional requirement of Penaeus chinensis for dietarycalcium, phosphorus, magnesium, potassium and iron was designed with orthogonalmethod(L_(16)4~5). Body weight of the tested P. chinensis was about 8g. Duration of the testwas 48 days. Growth, moisture and ash of P. chinensis were determined. The ratio ofcrust to body weight was calculated. The diet with 2.2% calcium. 0.91% phosphorus, 0.11% magnesium, 0.32% potassium and without iron were optimum for the fastestgrowth, minimum ash and the lowest ratio of crust to body weight. The effect of dietarylevels of these inorganic elements on P. chinensis moisture was not significant. Compa-rison between our results and Li Ai-jie's report indicated that nutritional requirementof P. chinensis for dietary inorganic elements differ with their growth.