The burning sensation after urination may be due to urinary tract infection, urinary stones, urethral foreign bodies, bladder cancer and other lesions. 1. Urinary tract infection: Due to the special nature of female anatomy, the urethra is shorter than that of men, the opening of the urethra is wider than that of men, and it is adjacent to the vaginal opening and the anus, etc. This kind of structure is easy to induce the occurrence of urinary tract infection, which stimulates the patients to have a burning sensation after urination. Accompanied by frequent urination, urinary tract irritation symptoms such as urgency, some patients may also appear urethral discharge. 2. Urinary stones: when the patient’s urine composition changes, it may form urinary stone lesions. During urination, the stimulation of stone movement leads to damage to the mucous membrane of the urinary tract, which can induce a burning sensation after urination. 3. Urethral foreign body: mostly seen in pediatric group, due to the curiosity of body structure, some small toys may be put into the urethra, leading to the damage of urethral mucosa, and may also induce inflammation, stimulating the child to develop burning sensation after urination. 4. Bladder cancer: it is a malignant tumor lesion occurring in the bladder. In the middle and late stages of the lesion, due to the development of the tumor, the patient may feel burning sensation after urination because the bladder expands and contracts to stimulate the lesion area during urination. There may be other reasons for the burning sensation after urination, patients need to consult the doctor in time for examination and early treatment.