The vague pain in the chest may be caused by breast enlargement. Mammary gland hyperplasia is a benign lesion, also known as lobular hyperplasia, cystic hyperplasia of the breast, etc. It is usually caused by the disturbance of hormone levels in the body. After the level of estrogen in the body rises in the premenstrual period, it can lead to hyperplasia-like changes in the mammary glands and the glandular vesicles, which will lead to vague pinching pain in the patient’s bilateral breasts after a long time. After the hormone levels in the body return to normal after menstruation, the pain may be relieved on its own, which is a benign lesion and should not be a cause for concern. It is also possible to go to the hospital for ultrasound examination, which is difficult to find lumps and nodules inside the breast and may reveal a disorder in the internal structure of the breast. The treatment is usually done with Chinese medicines, such as Prosperity Pill, Breast Disease Spirit, and Red Gold Anti-Knot Capsules, which can improve the patient’s symptoms, and if the pain is very obvious, you can also take oral celecoxib for symptomatic treatment. In ordinary life also need to eat a light diet, to avoid spicy, stimulating food, and to take more rest, keep a relaxed mood.