Under normal circumstances when replenishing potassium infusion, 1.0 to 1.5 grams of potassium chloride can be added per 500 milliliters of fluid, and the infusion rate is generally 10 mmol/l and should not exceed 20 mmol/l. In general, when intravenous potassium supplementation is used, the concentration should not be too high, and attention should also be paid to the speed of rehydration, which should not be too fast to avoid hyperkalemia. The principle of potassium supplementation at the sight of urine needs to be followed at the same time. Intravenous potassium supplementation is generally used in the treatment of hypokalemia. If the concentration of potassium is too high or the speed of rehydration is too fast in the process of potassium supplementation, it may lead to hyperkalemia, and in serious cases, it may also cause cardiac arrhythmia, resulting in cardiac arrest. It is recommended that patients should go to regular hospitals for intravenous potassium supplementation under the operation of professional doctors to avoid adverse consequences. In normal times, patients should avoid smoking, drinking, large amount of sweet food intake and excessive exercise, so as not to affect the recovery of the condition.