2 months old baby sleep less easily wake up may be caused by pathological or non-pathological reasons. 1, immature development of the nervous system: 2 months old baby because the sleep form is not yet mature, so there are often day and night reversal or sleep less easy to wake up phenomenon. 2, inappropriate parenting habits: for example, some mothers often check whether the baby is wet and change diapers at night, hold the baby to sleep, worry that the baby is hungry and hold up to drink milk and other inappropriate parenting habits, can lead to baby sleep less easy to wake up. 3, improper baby care: If parents give baby too much clothing, quilts are too thick, wrapped too tightly or the air in the house is not circulating, because the baby’s skin is weak heat dissipation, will sweat to stimulate the skin caused by discomfort, it is easy to lead to poor sleep, easy to wake up, crying and other phenomena. 4, excessive stimulation during the day: excessive stimulation of excitement given to the baby during the day will make its life and rest change, resulting in the baby easily wake up at night. 5, psychological factors: the baby’s attachment to the nipple or separation anxiety of not seeing mommy and daddy and other psychological factors can also cause the baby to wake up easily at night with little sleep. 6, disease factors: baby may wake up easily because of abdominal pain, bloating, colic or or nutrient deficiency (such as calcium deficiency, zinc deficiency and other elements), fever, itchy skin and other physical discomfort caused by a certain disease, and sleep less. In short, pathological or non-pathological reasons can cause a 2-month-old baby to wake up easily with little sleep.