The calcified foci in the uterine cavity are often caused by residues that cannot be removed from the body for a long time due to unclean uterus or medicated abortion after pregnancy, which may not be treated if they do not affect the body. The hysteroscopic removal of the calculus can be done directly under the eyes, and the surrounding adhesions can be separated under the hysteroscope with little damage to the endometrium and the uterine cavity.