Our hospital’s current intestinal preparation commonly used drug regimen: 1, polyethylene glycol electrolyte dispersion (Sutexin); 2, mannitol + glucose saline; 3, magnesium sulfate + electrolyte liquid; 4, senna. Comparison of programs and various programs of attention: 1, the first recommended Shu Taiqing program, the advantage is that before the examination does not need to follow the semi-liquid – fluid progressive diet control, as long as the examination before eating less food containing fiber components (such as bamboo shoots, celery, etc.), the disadvantage is the need to drink a lot of water for a short period of time, generally required to soak water within 3 hours 2500ml (about 5 kg of water or more) to take. 2, mannitol program: easier to produce bubbles, affecting the examination, and glucose composition diabetic patients are not suitable. 3, magnesium sulfate program: characterized by the effect is generally faster, the effect is too strong, easy to cause dehydration and electrolyte disorders, must be taken at the same time saline to replenish water and electrolytes, not as a conventional program, we generally used as a backup. The hospital’s magnesium sulfate only 50% concentration, need to be half diluted with water to about 30% of the concentration before drinking. 4, senna: simple, inexpensive, the role is also stronger, the examination can still have a few days after the diarrhea experience, but the preparation effect is extremely poor, affecting the visual field, can induce mucosal inflammation, interfering with the diagnosis. General conditions are not recommended, can be used for small bowel imaging, barium enema and other examinations of the intestinal preparation program. How to take laxatives: 1, must drink water at the same time, the amount of liquid to flush the intestine; 2, drinking speed should be relatively fast, otherwise lead to increased urination, but some patients are prone to vomiting, should grasp the speed according to their own adaptability; 3, the process of diarrhea generally from the discharge of fecal mass – fecal water – clear water such a process, can see watery stool, and clearer when the requirements are met; 4, some patients 4, some patients may have panic, sweating and other hypoglycemic performance in the middle, can temporarily contain sugar blocks and other treatment; 5, general colonoscopy routine such as afternoon examination, morning fasting after taking drugs, intestinal preparation is complete, about 1 hour before the examination can already eat a little food containing less water. For morning examinations, the intestinal preparation should be completed the night before or early in the morning; 6, painless colonoscopy requires anesthesia, so be sure to grasp the time, generally 4-6 hours before the examination to absolutely abstain from drinking and eating, so the morning examinations should be completed the night before, and the afternoon examinations should be completed early in the morning; 7, the examination day with hypertension can be a mouthful of water to take medication; 8, if the intestinal preparation is not good, remember to go to the We generally do not recommend enema preparation, if the preparation is not clean, first of all, it is still recommended to make another appointment to take medication to perfect the examination; write these first, any questions are welcome to correct.