Potassium has properties such as maintaining osmotic pressure and acid-base balance, and is used to participate in energy metabolism and maintain normal neuromuscular function. Potassium is an indispensable electrolyte in the human body, and most of it is present in all cells of the body, both intracellularly and extracellularly, and can form a coordinated effect on each other. Potassium ions have the effect of maintaining osmotic pressure and maintaining acid-base balance in the body, etc. They are also involved in energy metabolism and maintaining normal neuromuscular function. Potassium deficiency can easily lead to symptoms such as weakened heartbeat, respiratory paralysis, generalized weakness, etc. In serious cases, it can also be life-threatening. Therefore, when potassium deficiency occurs, potassium chloride should be supplemented in a timely manner in order to avoid endangering lives. It is recommended that patients with potassium deficiency should go to the hospital for treatment in time to find out the cause of the disease and then treat the cause accordingly. It is also recommended that they should consume more vegetables and fruits with high potassium content, such as yam, watermelon, spinach, banana, etc., and inform the doctor in time if they feel unwell.