First of all, we must know what is the ear warehouse, the ear warehouse is congenital preauricular fistula, which is a congenital disease, formed during fetal development of sinus-like structures, the surface of the fistula by the epithelial tissue, so the epithelial tissue shed epithelial cells, will accumulate in the fistula among them. When the accumulation of epithelial tissue becomes infected, the contents of the ear warehouse, which is the contents of the fistula in front of the ear will become infected, pus formation of foul-smelling secretions. Surgery is required to treat the ear canal, which is an infected preauricular fistula, and to remove the fistula as soon as possible in order to prevent future recurrence.