There is a relationship between constipation and vitamin B deficiency. Constipation is defined as having less than three bowel movements per week and having dry, hard stools and difficulty passing stools. Constipation may be related to vitamin B deficiency, slowed gastrointestinal motility, intestinal and anal diseases. There is also a relationship with age, exercise, lifestyle, and psychological stress. Vitamin deficiencies are likely to be related to diet, poorer absorption in the gut, and other reasons. Vitamin A deficiency may lead to night blindness, conjunctival dryness, corneal softening and other symptoms; Vitamin B deficiency may lead to lethargy, anorexia, fatigue, anemia and other symptoms, most of the crude fiber food containing vitamin B, due to anorexia intake of vitamin B is reduced, the raw material for the formation of stool is reduced, and may also lead to constipation; Vitamin C deficiency may lead to bleeding of the capillaries, irritability, When vitamin C is deficient, it may lead to capillary hemorrhage, irritability, pallor and other symptoms; when vitamin D is deficient, it may lead to rickets, osteomalacia and other diseases in children. But vitamin B deficiency may lead to constipation. Therefore, if the symptoms of constipation, you need to further check the colonoscopy, vitamin quantitative and other programs to find the cause of the disease, and then follow the doctor’s instructions for treatment. Also eat more bananas, dragon fruit, cabbage, celery, leeks and other foods with high fiber content.