What if I want to shit but I can't?

Want to shit and pull out consider constipation or gastrointestinal dysfunction caused by, it is best to diet conditioning, can eat some light and easy to digest food, eat more grains, eat more coarse fiber vegetables and fruits, drink more warm water, at the same time can use hot water bag hot compress abdomen or clockwise massage is conducive to stool discharge, do not eat too greasy food and barbecue spicy food, serious can take digestion and Tongchang moistening drug treatment.