Constipation after eating meal replacement powder may be due to the lack of dietary fiber in the meal replacement powder, weakened intestinal peristalsis, and less food residue produced by eating meal replacement powder. 1. Eat meal replacement powder constipation may be due to the lack of dietary fiber in the meal replacement powder, due to the production of meal replacement powder is too fine, so the lack of nutrients such as dietary fiber. 2. Eat meal replacement powder constipation may be due to intestinal peristalsis weakened, due to eat meal replacement powder dieters may lack of exercise, which leads to intestinal peristalsis greatly weakened. 3. Eat meal replacement powder constipation may also be because the meal replacement powder will soon be absorbed by the body, take meal replacement powder to produce a strong sense of satiety, reducing the intake of other foods, resulting in little food residue. There are many reasons for constipation after eating meal replacement powder, so eating meal replacement powder constipation, should immediately go to the regular hospital to clarify the cause and receive treatment.