There are certain rules and precautions for cowpea diet. In general, it is recommended not to eat with the following foods:1. Cowpeas should not be eaten with potatoes and sweet potatoes. Although cowpeas are relatively high in nutritional value, eating too much of them can cause qi stagnation; therefore, patients with qi stagnation should eat fewer cowpeas to avoid bloating. After eating cowpeas, you should not eat flatulent foods, such as potatoes and sweet potatoes. Both are flatulence foods and should not be eaten with cowpeas, especially for people with poor stomach function and digestion.2. Cowpeas should not be eaten with mangosteen and oranges. Mangosteen and orange are cold foods and cowpeas should not be eaten with cold foods except flatulence foods. This is because eating these cold fruits together with cowpeas will reduce the nutritional value of cowpeas and even cause indigestion in severe cases. Apart from mangosteen and oranges, grapefruit, persimmons and kiwi should not be eaten with cowpeas at an interval of at least 30 minutes.3. Cowpeas should not be eaten with foods rich in potassium ions. If cowpeas are eaten with foods rich in potassium ions, the drainage function of the body can be increased and the drainage effect will be stronger, resulting in a large number of potassium ions being eliminated from the body and the osmotic pressure of the blood being lowered; a large number of potassium ions being eliminated from the body will also aggravate the burden on the kidneys and the heart. In short, this is very unfavorable to health. Foods rich in potassium ions:bananas, soybeans, soybean skins, lasagna sheets, peanuts and so on.