The so-called “injection and infusion” generally refers to the injection of fluids, which is also commonly referred to as infusion. The need for fluids in purulent otitis media should be analyzed according to the specific condition. If it is an acute attack or have systemic symptoms or ear symptoms are more serious can be given fluids; no obvious systemic symptoms generally do not need fluids. 1. Need fluids: If the patient acute attack or symptoms are more serious, such as severe ear pain, hearing loss, fever, chills, etc., the examination of the tympanic membrane can be seen to be congested and swollen obviously. At this time, it is necessary to be systemic antibiotics in sufficient quantity, including oral or intravenous, so the situation requires infusion. If necessary, pus can be taken for bacterial culture and drug sensitivity test to choose sensitive antibiotics. 2. No need for fluids: If the patient’s symptoms are mild or the duration of the disease is long, the main purpose of this case is to control the infection and smooth drainage, for example, before the tympanic membrane perforation, 1% phenol glycerin drops can be given to improve the local inflammation, fluticasone propionate nasal spray nasal spray, and so on. After perforation of the tympanic membrane can be given levofloxacin ear drops and other drugs ear drops. Therefore, there is no need for fluids in this case. When there is purulent otitis media, it is recommended to consult the hospital as soon as possible, and the professional doctor will judge according to the situation. Drugs must be applied under the guidance of a doctor.