For one-month-old infants with yellow water flowing from the ears, there are mainly the following clinical possibilities.1. The child has congenital thin earwax, which is also known as oily cerumen. In this case when the child’s head sideways or shaking the head, there is a possibility that this dilute earwax will flow out, manifesting itself as a yellowish secretion. Usually this condition is binaural, the same in both ears, and does not occur in one ear.2. Eczema of the external auditory canal, this patient usually has a history of eczema elsewhere. Generally speaking, if eczema occurs in the ear canal, the patient will often scratch the ear habit, there will be yellow water inside the ear performance, usually not accompanied by fever and so on performance. 3, acute otitis media. Generally mostly secondary to upper respiratory tract infections, pneumonia, sinusitis and other diseases, the child may have a fever and other manifestations, this yellow water generally have a pus odor, clinically, if the blood test blood routine will show the manifestation of the infection, do the temporal bone CT can be seen within the tympanic chamber of the inflammatory changes.