20 days baby sleep is not solid old grunting, can be seen in physiological phenomena, pathological conditions (such as gastrointestinal dysfunction), specific need to analyze and judge according to the baby’s condition. 1. Physiological phenomenon: If the ambient temperature around the sleeping area is too high or the blanket is thicker, which makes the baby feel obviously uncomfortable, the above symptoms may appear, or the ambient environment has localized stimulation of the skin and other circumstances, which may also affect the sleep, parents need to check the clothing and blanket carefully. 2. Pathological conditions (1) gastrointestinal dysfunction: such as feeding more, the baby’s digestive tract can not tolerate, abdominal distension, abdominal discomfort, some babies may appear spitting up frequently or vomiting symptoms, can affect sleep, appear “sleep is not solid always grunting” phenomenon. (2) Skin diseases: such as eczema in a large area, can make the baby produce obvious discomfort, such as itching, affecting sleep can appear above phenomenon. 20 days old baby sleep not solid always grunting may also be related to other reasons, it is recommended to actively consult a specialist physician to assess and clarify the cause.