Hoarseness in 2-year-old babies can be caused by incorrect use of voice, acute laryngitis, etc. The treatment should be decided according to the cause, for example, acute laryngitis needs to be treated with nebulization using budesonide suspension, and bacterial infections need to be treated with anti-infective therapy. 1. Incorrect use of voice: For babies of this age group, the above phenomenon may occur if they shout or cry for a long time. These babies usually have a good mental response and no other abnormal symptoms (e.g. fever). For treatment, avoid the above inappropriate voice behavior, drink plenty of water and take rest. 2. Acute laryngitis: mostly referred to as acute infectious laryngitis, caused by viral or bacterial infections, clinical hoarseness may occur, may be accompanied by hollow cough, fever and other symptoms, and in severe cases, respiratory distress may occur. Treatment can be under the guidance of a doctor to use budesonide suspension and other hormones for nebulized inhalation therapy to reduce laryngeal edema, for serious conditions need to be evaluated by a physician after intravenous dexamethasone treatment, suspected bacterial infection need to use antibacterial drugs (such as cefaclor) anti-infective treatment. 2-year-old baby hoarseness may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.