The protein digestibility of the shrimp Penaeus orientalis‘ with the average body length 8.0-9.0cm on siateen feeding ingredients was determined by the indirect method with Cr₂O₃ as an indicator. The order of digstibility from highto low in siateen feeding ingredients for the shrimp is brine shrimp, blue clam, cooked soybean cake,Peruvian fish meal,uncooked soybean cake,FS-yeast,peanut cake,ESB-yeast,cotton seed cake,meat meal,rape cake,feather mea.1,TPL-32 yeast, blood meal, wheat bran and maize meal. The experimental results in connection with digestibility provided reference data for evaluation of the nutritional value of feeding ingredients and for formula of the artificial feed.