The burning pain in the vagina after ejaculation may be caused by the presence of diseases in the sexual partner or female diseases. 1. Sexual partner disease: for example, men have urinary tract infections, seminal vesiculitis, cystitis, prostatitis, urethritis and other diseases, may lead to semen abnormalities, so abnormal semen stimulation will cause vaginal burning sensation. 2. Women’s diseases: for example, women’s various types of vaginitis, cervicitis and other diseases, will cause the mucous membrane congestion, edema, may lead to the symptoms of burning pain in the vagina after ejaculation. The burning pain in the vagina after ejaculation, there may be other reasons, you need to go to the hospital in time for examination, to clarify the cause of the disease and follow the doctor’s instructions for treatment.