Epidemiologically, the parasite in Oncomelania hupensis is generally Schistosoma japonicum, so if it is not completely killed, it will easily lead to schistosomiasis and cause certain harm to human body. But usually snails can kill their parasitic eggs in about 20 minutes after frying and cooking, so that they can no longer be transmitted to people. Therefore, as long as the snails are fully cooked, there is no problem and you can eat them with confidence. Don't eat it when it is undercooked or unclean. This is not good for your health.