After surgery, the patient’s heart rate is higher than 100 beats per minute, generally speaking, there are several common reasons: First, the patient’s body combined with serious infections, toxin absorption into the blood can cause the patient’s heart rate is obviously too fast. At this time, patients need to use cephalosporin III antibiotics to strengthen the intravenous anti-infection treatment, if necessary, blood culture can be extracted to select more sensitive antibiotics, the body’s infection control, the patient’s heart rate can be gradually reduced back to normal. Second, if the patient’s abdominal cavity is accompanied by active bleeding after surgery, the patient will have a decrease in effective blood circulation, and the heart will accelerate compensatory beating to meet the blood supply of important organs. However, with the progressive increase of bleeding, the patient will experience a significant drop in heart rate and blood pressure. At this time, the patient needs to undergo surgical exploration as soon as possible to identify the site of bleeding and then give complete hemostasis treatment. At the same time, replenish a large amount of crystals, colloids and blood transfusion to maintain effective blood circulation, which can restore the patient’s normal heart rate.