Stomach pain once infusion may be caused by drug stimulation, gastrointestinal dysfunction, gastric diseases and other reasons. 1. Drug stimulation: the input of liquid on the gastric mucosa caused a certain degree of damage, the drug stimulation of the gastric mucosa, resulting in stomach pain and other gastrointestinal reactions. 2. Gastrointestinal dysfunction: nervousness, stress and other reasons lead to their own gastrointestinal dysfunction, infusion of fluids on the gastrointestinal tract caused by a certain degree of stimulation caused by stomach pain and other gastric discomfort. 3. Stomach disease: the patient’s own gastric disease, the input liquid temperature is lower into the body, resulting in gastric attack aggravated gastric discomfort, appeared once the infusion of stomach pain. If you are experiencing recurring, severe pain, you should consult your doctor in time to find out the cause of the pain and get targeted treatment to alleviate the pain.