The fastest method is cathartic cathartic, which is the most commonly used method to treat constipation with drugs at present, among which the most common are solvent cathartic, lubricating cathartic and osmotic cathartic. Although there are many kinds, the mechanism of medication is similar. By stimulating nerve cells in intestinal mucosa and intestinal wall, intestinal peristalsis is "forced" to complete defecation. It will lead to abdominal pain and diarrhea in patients, and it will greatly reduce the sensitivity of the intestine to fecal stimulation for a long time, and it is difficult to cause constipation naturally, which is almost contrary to the purpose of restoring natural defecation in the intestine. Although this method is fast, it has side effects and is not recommended.

Prevention and methods:

1. Avoid eating too little or food is too fine, lack of residue, and reduce the stimulation to colon movement.

2. Avoid disturbing defecation habits: constipation is prone to occur due to mental factors, changes in life patterns, and excessive fatigue during long-distance travel.

3. Avoid abuse of laxatives: abuse of laxatives will weaken the sensitivity of the intestine, form dependence on some laxatives, and cause constipation.

4. Arrange life and work reasonably, so as to combine work and rest. Appropriate cultural and sports activities, especially abdominal muscle exercise, are conducive to the improvement of gastrointestinal function, which is more important for sedentary and highly focused mental workers.

5. Develop good defecation habits, defecate regularly every day, form conditioned reflex, and establish good defecation rules. Don't ignore when defecating, defecate in time. The environment and posture of defecation should be as convenient as possible, so as not to inhibit defecation and destroy defecation habits.

6. It is suggested that patients drink at least 6 cups of 250 ml water every day, exercise moderately, and develop the habit of defecation regularly (twice a day, each time 15 minutes). After waking up and eating, the action potential activity of the colon is enhanced, pushing the feces to the distal end of the colon, so morning and after eating are the easiest time to defecate.