Newborn baby mouth spitting bubbles, can be divided into normal physiological phenomenon and pathological phenomenon, the details are as follows: 1, normal physiological phenomenon: baby generally two months, the salivary glands began to develop, with the salivary glands are more and more well developed, the amount of saliva in the mouth will be more and more, but the swallowing function is not yet well developed, so it will spit out saliva in the form of bubbles, in addition to the performance of spitting bubbles, the In addition to the performance of spitting bubbles, eating, sleeping, playing normal, no other abnormal performance; 2, pathological phenomenon: If the spitting bubbles at the same time accompanied by loss of appetite, facial redness, breathing faster, irritability, or drowsiness, red lips, fever and other symptoms, consider suffering from neonatal pneumonia, because the baby’s trachea is short and narrow, funnel-shaped, when exhaling the gas in the lungs through the narrow trachea, the tracheal phlegm washed out of the respiratory tract into the mouth, the baby will show bubble spitting. The baby will show the symptoms of spitting bubbles.