Common causes of watery diarrhea without stomach pain include mental irritation, intestinal flora imbalance and hyperthyroidism. Commonly used solutions include relaxing, regulating intestinal flora and stopping diarrhea. 1. Mental stimulation: if due to work, study, long-term stress, excessive tension, anxiety, can lead to vegetative nervous system dysfunction, which in turn affects the gastrointestinal digestive function, may trigger diarrhea. At this time, you need to learn to relax, such as reading books, listening to songs and friends and relatives to confide in. 2. Intestinal flora imbalance: If the intestinal pathogenic bacteria increase, the balance of intestinal flora is destroyed, under the stimulation of Escherichia coli, the intestinal mucosa secretes more water, the feces become more and more dilute, and you will have watery stools. You can take Lactobacillus tablets, Bifidobacterium bifidum tetragonum tablets and other live bacterial preparations to maintain the balance of intestinal flora. 3. Hyperthyroidism: mainly due to the high basal metabolic rate of patients with this disease, intestinal peristalsis increases and leads to diarrhea, the treatment is mainly to give anti-thyroid drugs such as propylthiouracil. The stomach does not hurt but dilute water, many reasons, it is recommended to consult as soon as possible, improve the examination, clear cause, symptomatic treatment. Patients with diarrhea should pay attention to the supplementation of saline to prevent dehydration and electrolyte disorders.