Hoarseness can be caused by improper use of voice, upper respiratory tract infection, acute tonsillitis, vocal polyps, etc. Targeted treatment is needed to address the cause of the problem, including rest, anti-infection, surgical treatment, etc. The most common causes of hoarseness in children include: improper use of voice, upper respiratory tract infection, acute tonsillitis, and vocal polyps. 1. Improper use of the voice: children with poor self-control, it is easy to make a lot of noise, read aloud for a long time, eat a lot of cold and spicy stimulating food and other stimulation of the mucous membrane of the throat, which may lead to hoarseness. Children should pay attention to rest, light diet, pay attention to protect the voice. 2. Upper respiratory tract infection: viral infection of the mucous membrane of the upper respiratory tract can lead to oozing, edema, congestion and other inflammatory lesions of the mucous membrane of the throat, affecting the normal function of the vocal cords, which may lead to hoarseness. Generally, supportive treatment can be provided, and antiviral drugs such as ganciclovir and oseltamivir can be used as prescribed by the doctor if necessary. 3. Acute tonsillitis: bacterial and other pathogens infect the tonsils leading to tonsil hyperplasia and hypertrophy or even pus and other inflammatory changes, may be hoarse. You can use azithromycin, cefuroxime, amoxicillin and other antibiotics for anti-infection treatment. 4. Vocal cord polyps: benign hyperplasia of the local tissues of the vocal cords can lead to vibration of the vocal cords are affected, which may lead to hoarseness. Vocal cord polyps are usually treated with surgery to remove them. The child’s hoarseness needs to be diagnosed in time and treated according to the doctor’s instructions, so as not to miss the opportunity for treatment. All of the above medications should be used under a doctor’s supervision.