The concentration of potassium in human serum is 3.5 ~ 5.5 mmol/L, which is necessary for life activities. The main function of potassium in human body is to maintain acid-base balance, participate in energy metabolism and maintain the normal function of neuromuscular. The blood potassium level of normal people will not be abnormal. Did you check the reason for the high potassium before? You can do some tests to see. There are many foods with low potassium. Usually pay attention to a low-salt diet, eat less and eat more meals, and eat less foods with high potassium ions: green leafy vegetables (such as spinach, spinach, amaranth and lettuce), mushrooms, laver, kelp, carrots and potatoes. Fruits rich in potassium include kiwi fruit, banana, strawberry, orange, grape, grapefruit and watermelon, as well as various juices and watermelons. But it is recommended to check it in detail.