2. Some silkworm chrysalis have "microparticle disease", which is an abnormal disease spread by silkworm eggs and silkworm excrement. This kind of silkworm chrysalis can also cause poisoning reaction to consumers, so it is not suitable to eat silkworm chrysalis every day to reduce the probability of silkworm chrysalis poisoning.

3. Fresh silkworm chrysalis is hard to get and easy to deteriorate. Silkworm pupa will change its shape if it is left for a long time. Miscellaneous bacteria will pollute, breed, ferment and mildew, thus producing toxins, which will poison people after eating it, so it is not advisable to eat silkworm pupa every day.