There is Fasciola brucei in horseshoe. Water chestnut is mostly planted in paddy fields, and it is easy to be parasitized by some parasitic larvae in the water during its growth. The most common parasite is Fasciola brucei, referred to as Fasciola. The water chestnut larvae may be on the water chestnut epidermis or enter the water chestnut body through cracks. When people chew water chestnut skin with their teeth or eat water chestnut raw, larvae will enter the body, parasitize in the small intestine and develop into adults, leading to water chestnut. It may cause intestinal ulcers, abdominal pain, diarrhea, nausea, vomiting, fever, allergies and edema. Introduction of horseshoe: horseshoe is also called horseshoe, because it looks like horseshoe, so it is called horseshoe. You can eat it raw or stir-fry it as a dish and stew it. Water chestnut is a common vegetable and fruit with rich nutritional value. It is not only rich in vitamins and minerals, but also has the effects of clearing away heat, moistening lung, strengthening spleen and appetizing. Therefore, water chestnut is very popular in southern China, and is widely used for cooking and eating.