Patients with chronic renal insufficiency can often develop hyperkalemia, which can lead to cardiac arrhythmia and other serious cases, so patients with high potassium should be low-potassium diet, high potassium food as far as possible not to eat, common foods containing high potassium are fresh fava beans, yams, spinach, amaranth, kelp, nori, black dates, apricots, almonds, bananas, walnuts, peanuts, beans, sheep kidney, pig kidney, brown rice, oats, potatoes pumpkin, barley, buckwheat, whole grains, dried apricots, dried plums, raisins, cantaloupe, cherries, mangoes, oranges, melon seeds, sardines, yogurt, milk, oranges, papaya, chocolate, apples, dates, grapes, cauliflower, goose meat, potatoes, etc. In addition, poultry, fish and lean meat, and mushrooms are also high in potassium. Dark-colored vegetables are also high in potassium, especially red amaranth, green amaranth and hollow cabbage, and nuts such as hazelnuts, cashews, pumpkin seeds and sunflower seeds are high in potassium. In addition, Chinese herbal medicines for patients with hyperkalemia should not be decocted for a long time or concentrated, as the potassium content of Chinese herbal medicines will also be significantly higher after a long decoction.