The history of the onset of ovarian cysts can be judged from the following points: 1. Benign cysts generally have a longer course and grow more slowly. Malignant cysts tend to be shorter in duration and grow very rapidly. 2. Benign cysts are usually unilateral, cystic, and smooth to the touch and have good mobility. If it is a malignant cyst, the doctor finds that the mass is substantial, irregular to the touch and relatively fixed during the examination.3. Benign cysts usually do not have ascites, but if it is a malignant cyst, it is often found that there is ascites in the pelvis during the ultrasound. And when ultrasound is done, benign cysts are dark areas of fluid and the borders are clear. In malignant cysts, some dark areas have some disorganized light clusters or dots inside and the boundaries are not clear.