The common causes of postpartum finger stiffness are as follows: 1, due to postpartum hormonal changes, which can cause relaxation of the joint capsule and surrounding ligaments, thus causing finger stiffness; 2, due to postpartum vitamin B12 absorption reduction, thus leading to peripheral nerve dysfunction, which can cause finger sensory impairment and joint stiffness; 3, due to postpartum calcium deficiency and cause hand stiffness. In addition, postpartum stiffness of maternal fingers may also be caused by overexertion caused by finger muscle strain, or due to improper finger warming measures, cold invasion, it is recommended that the mother rest more after childbirth, avoid contact with cold water, such as washing diapers and clothes with cold water, and avoid eating cold food in the diet.