It is normal for the menstrual cycle to have an error of 3-7 days, and there is no need to worry about a delay of one or two days, but it does not exclude the existence of disease. Delayed menstruation and frequent urination are not necessarily directly related to each other, but may be caused by the simultaneous appearance of two diseases. For this symptom, priority is given to the possibility of pregnancy. Generally, pregnancy may have delayed menstruation, and as the time of pregnancy grows, the uterus increases and presses on the bladder, which may cause frequent urination. It is recommended to go to the hospital to test the blood HCG in time for a clear diagnosis, and the exclusion of pregnancy is generally related to the following reasons. A, menstrual abnormalities related to disease 1, endocrine disorders: endocrine disorders may lead to menstrual disorders, and then delayed menstruation, generally patients may have greater mental stress or weight loss resulting in significant weight loss. For patients considering endocrine disorders, it is recommended to go to the hospital for a hormone six test, which can be supplemented with relevant hormones according to the test results, such as progesterone if the progesterone level is low, and at the same time, relax and regular rest. 2. Polycystic ovary syndrome: Patients are often unable to have regular menstruation because of ovulation disorders, and patients with polycystic ovary syndrome have a thin endometrium, so the menstrual volume may be The menstrual volume may be low. There is no cure for polycystic ovary syndrome, but it can be managed by adjusting lifestyle habits, avoiding high calorie food intake and reducing weight. The inflammation of the urethra may lead to frequent urination due to the special anatomical structure of women. Patients with vaginitis often have mild vulvovaginal itching, abnormal leucorrhea, and discharge with a foul odor. Patients with common bacterial vaginitis will have abnormal leucorrhea, such as yellow-green symptoms, often treated with cephalosporin antibiotics. Patients with vulvovaginal pseudomonal yeast disease usually have tofu-like leucorrhea, which can be treated with oral fluconazole; 2. Urinary tract infection: Mostly seen due to pathogens invading the urethra, patients may show symptoms such as frequent urination, urgent urination and painful urination. Clinically, antibacterial drugs such as ofloxacin and cefaclor are often used for treatment. Drinking more water in daily life can play the role of flushing the urethra and facilitate recovery from the disease. Overall, there is not necessarily a direct relationship between delayed menstruation and the constant urge to go to the toilet, but based on the symptoms one needs to consider related diseases, and it is recommended that women can combine their conditions for further examination.