When can you drink astragalus after surgery depends on the specific time of the patient’s digestive tract function recovery: 1, generally larger gastrointestinal surgery, such as gastrectomy and intestinal resection surgery, you need to fast for 5-7 days after the operation, some of the weaker, older patients, their gastrointestinal tract recovery time will be longer. 5-7 days after the gastrointestinal tract gradually recovered, you can drink some astragalus water. 2, the other parts of the surgery, generally 1-2 days after the operation to restore peristalsis, you can drink some astragalus water. Other parts of the operation, generally 1-2 days after the operation, the intestinal tract can resume peristalsis, you can drink astragalus water. Astragalus has the effect of replenishing qi, postoperative patients are relatively weak, drink astragalus water can make the condition recover faster.