Eating undercooked eel may lead to jawworm infection. Eel is an intermediate host for the jawworm. If the eel carries the jawworm, and the jawworm is not killed by frying, it is likely to be infected after being eaten. Human beings are generally susceptible to the nematode, mostly in areas with a high consumption of freshwater fish, poultry and meat, and the main modes of infection are oral, skin-to-skin, and mother-to-child infections. Infection with jawworms usually results in low-grade fever, nausea, vomiting, and fatigue, and in severe cases, it can lead to blindness and paralysis. Therefore, it is important to maintain a healthy diet and eat cooked food as much as possible in order to effectively prevent jawworm infection. Once infected with the nematode, it is necessary to treat the disease in a timely manner and actively cooperate with the treatment to prevent the condition from becoming more serious.