[Objectives]  To determine the nutritional content of Heterolocha jinyinhuaphaga Chu larvae, pupae and adults, in order to investigate the potential for the development of this species as a food resource. [Methods]  The water, protein, fat, total sugar, amino acid, fatty acid, trace element and vitamin content of Heterolocha jinyinhuaphaga Chu larvae, pupae and adults were determined in a laboratory using national standard test methods. The amino acid score, essential amino acid index, ratio of essential to nonessential amino acids, and ratio of essential to nonessential fatty acids in H.  jinyinhuaphaga larvae, pupae and adults were also analyzed and compared with other foods. [Results]  The following results are for larvae, pupae and adults in that order. Water content was 72.93%, 64.92% and 56.16% and protein content was 50.64%, 60.12% and 48.38%. Fat content was 21.98%, 23.84% and 20.60% and total sugar content was 3.32%, 5.35% and 2.79%. Total amino acid content was 394.31, 413.54 and 356.09 mg/g, and total essential amino acid content was 158.80, 166.83 and 132.67 mg/g. The proportion of essential to total amino acids was 40.27%, 40.34% and 37.26% and the ratio of essential to nonessential amino acids was 67.43%, 67.62% and 59.38%. Essential amino acid indices were 1.02, 1.07 and 0.87. Unsaturated fatty acid content was 68.45%, 69.09% and 66.29% and P/S values were 2.17, 2.24 and 1.95. The essential fatty content was 34.35%, 34.77% and 32.71%. Zn content was 11.29, 98.42 and 66.98 mg/100 g, and Fe content was 32.31, 19.84 and 13.04 mg/ 100 g. Cu content of larvae was 18.54 mg/100 g (pupae and adults contained no Cu). B₆ had the highest concentration among the vitamins tested, which was 7.93, 25.82 and 26.21 mg/100 g. [Conclusion]  The results suggest that H. jinyinhuaphaga has high nutritional value and has tremendous potential for development as a food resource.