The black stuff inside the silkworm pupa is the neuromuscular body of the silkworm pupa, which is usually edible. Silkworm pupa is rich in protein, each 100 grams of silkworm pupa species contains 21.5 grams of protein, 13 grams of fat, cholesterol 155 milligrams, carbohydrates 6.7 grams, 140 sodium milligrams, vitamin E9.89 milligrams, vitamin B22.23 milligrams, phosphorus 207 milligrams, potassium 272 milligrams, magnesium 103 milligrams, calcium 81 milligrams, iron 2.6 milligrams, zinc 6.17 milligrams. And the flavor of silkworm pupa is delicious, high protein content, some frail elderly, children and postpartum women, can be used as a high-level nutritional supplements to eat. Silkworm chrysalis itself is the whole process of silkworm into moth, the black stuff inside the chrysalis is the chrysalis of the neuromuscular body, is edible, will not cause harm to the body.