The symptoms of low potassium include the following: 1. The common symptoms of the neuromuscular system are weakness of the limbs, flaccidity, difficulty walking, and respiratory muscle weakness and difficulty breathing when the respiratory muscles are involved. 2. Potassium deficiency can cause damage to the renal tubules and lead to potassium deficiency nephropathy, glomerulonephritis and renal failure. 4. Hypokalemia can lead to decreased glucose tolerance and stunted growth in children with long-term potassium deficiency. 5. It is important to find out the causes of low potassium, such as long-term malnutrition, insufficient potassium intake, frequent consumption of carbonated drinks, gastric mucous membrane damage, gastric ulcer, intestinal diseases, etc. If low potassium is not corrected for a long time, it can accumulate the whole body organs and endanger life. Long-term application of large amounts of diuretics, uremia leads to excessive loss of potassium. Find out the cause to treat the etiology, timely replenishment of potassium chloride, and diet should be supplemented with foods that contain more potassium, such as bananas, kiwi, purple cabbage, etc.