Whether a girl’s thick voice can be thinned needs to be analyzed on a case-by-case basis. If you are born with a thick voice, it may be due to genetics that causes your vocal cords to grow thicker and wider, and it is unlikely that your voice can be thinned out at this time. If the voice is thick due to disease, it can usually be restored after treatment. There are the following clinical conditions: 1, respiratory infections: if a girl has a recent cold, cough and other upper respiratory tract infections, it may be laryngitis caused by vocal problems, you need to go to the hospital in time to do a laryngoscopy, and after active treatment, the voice can be restored; 2, vocal folds hyperplasia: long-term use of the voice incorrectly, over-vocalization, etc. may lead to vocal folds hyperplasia, for example, vocal folds nodules, vocal fold polyps, vocal folds, such as leukoplakia. It is recommended to go to the otorhinolaryngology department of the regular hospital to do electronic laryngoscopy examination, in order to clarify the diagnosis, and give nebulization, oral medication and other symptomatic treatment. If long vocal polyps, it is recommended to do vocal polyp excision surgery, the thick voice will be improved; 3, endocrine abnormalities: due to the exuberant secretion of androgens in girls, resulting in patients with thick voice, hairy and other masculinized features, commonly found in endocrine anomalies, if necessary, to the endocrinology department for consultation.