There is no best solution for a 10 year old girl who has bad odor. General solutions include daily cleaning, antiperspirant treatment, etc. In severe cases, injections are available. 1. If the symptom of bad odor is mild, it is usually enough to pay attention to keep the armpits dry and clean, and change clothes frequently. Medication can also be used at the same time, including the use of topical antiperspirants. 2. If the symptoms are obvious, botulinum toxin can be injected to reduce the secretion of sweat to reduce the odor. 3. Surgery is generally not recommended for underage children, and it is best to wait until the child reaches adulthood. If the phenomenon of bad breath is obvious, go to the hospital in time, choose the appropriate treatment, the use of the above drugs should follow the doctor’s instructions.