There are many reasons why 2-week-old babies cry in bed at night, such as lack of calcium, rickets, skin eczema and so on. 1. lack of calcium: two-week-old baby calcium intake is insufficient, will affect the normal growth and development of the baby, the emergence of bone pain, hand and foot twitching, etc., the baby feels physically uncomfortable will cry. 2. skin eczema: the weather is hot, the baby wears clothes with poor ventilation, easy to make the baby long eczema. The baby’s localized skin appears red with itchy pimples, the baby will cry because of the itchy body. In addition, indigestion can also lead to bloating and abdominal pain, causing babies to cry. Parents need to give their babies balanced nutrition and follow the doctor’s advice to supplement calcium and vitamin D. If your baby’s crying is more serious, you should go to the hospital and follow the doctor’s advice for treatment.