Leukorrhea like water physiological no need to use drugs, if it is trichomoniasis, bacterial vaginosis caused by the need to use metronidazole drugs treatment. 1. physiological: around the time of ovulation, due to changes in the level of hormones in the body, will lead to an increase in the amount of leukorrhoea, watery leukorrhoea, this situation generally does not have any taste, and there are no symptoms can be no need for treatment. Or after sex, when the liquefied semen out of the body, outflow of watery leukorrhea, etc., these cases do not need to use drugs. 2. Trichomonas vaginitis, bacterial vaginosis: when a woman suffers from trichomonas vaginitis or bacterial vaginosis, there will be watery leukorrhea, or yellow foamy, itchy symptoms, odor and so on, generally need to use metronidazole treatment, if necessary, the use of cephalosporin or quinolone drugs treatment. Leukorrhea like water need to go to the hospital as soon as possible, by the doctor according to the specific conditions, the development of individualized diagnosis and treatment plan, so as not to delay the condition.