Pregnant women waking up in the morning with swollen fingers may be caused by protein deficiency, edema, and drinking too much water at night. 1. Protein deficiency: the lack of protein in pregnant women can not form enough albumin, resulting in a decrease in plasma colloid osmotic pressure, resulting in intravascular fluid into the tissue space caused by edema, appearing in the morning to wake up with swollen fingers, eyelid flaccidity. 2. edema: pregnant women during pregnancy uterus enlargement compression of the veins, resulting in venous return obstruction, may wake up in the morning hands and feet swelling. 3. Drinking too much water at night: Pregnant women who eat too much before going to bed at night, drink too much water and so on, resulting in cellular oversaturation, may wake up in the morning and feel the fingers are swollen, can’t make a fist. There are other reasons why pregnant women wake up in the morning with swollen fingers, can be appropriate bed rest, if the swelling can not be relieved, it is recommended to consult a doctor for a clear diagnosis.