Abstract:This study compared the nutritional value of protocorms of Dendrobium officinɑle and Tiepi Fengdou. The contents of general nutrients， minerals and amino acids were measured， and the nutritional evaluation of essential amino acids between them was analyzed. The results showed that the protein content in the protocorms was 6.78 times higher than that in Tiepi Fengdou， and the ascorbic acid and alcohol extract were 1.74 times and 1.72 times higher， respectively； the contents of some minerals such as K， Mg， Fe， and Mn were significantly higher than that in Tiepi Fengdou （P＜0.01）； the contents of 16 amino acids were much higher than that in Tiepi Fengdou， and the ratio coefficients of essential amino acids were comparable between the two. Therefore， the nutritional value of protocorms of D. officinɑle is high enough that it could partially replace D. officinɑle as a new raw material for the development of related functional foods.