Heavy menstruation after uterine fibroid surgery may be related to the incomplete recovery of the uterus and large damage of uterine smooth muscle. 1. Incomplete recovery of uterus: In the early stage after uterine fibroid surgery, the uterus has not fully recovered, which may lead to menstrual disorders. As a result, the patient may have heavy menstrual flow at the next menstrual period. 2. Large damage to uterine smooth muscle: heavy menstruation after uterine fibroid surgery may also be caused by large damage to uterine smooth muscle during uterine fibroid surgery, which leads to abnormal bleeding of uterus. If patients have heavy menstruation after uterine fibroid surgery, it is recommended to go to the hospital in time for standardized treatment, so as not to threaten their health.