Foods rich in potassium are as follows: 1, mushrooms, such as monkey head mushrooms, shiitake mushrooms, flat mushrooms, fungus, these mushrooms are often rich in potassium. 2, legumes, such as soybeans, green beans, red beans, black beans, tofu, soy milk, these legumes are often high in potassium. 3, fruits, such as bananas, oranges, oranges, grapefruit, watermelon, these fruits are often high in potassium and are an important source of potassium. Fruits often contain high levels of potassium, which is an important source of potassium.