Some patients with ovarian hyperstimulation syndrome are prone to thrombosis. Once thrombosis is formed, it can lead to serious consequences, even life-threatening. Thrombotic diseases are difficult to treat and have poor results, so early prevention is the most important means. Drinking more water to expand blood vessel volume; high protein diet to enhance blood vessel osmotic pressure; and using anticoagulant drugs if necessary are all effective preventive measures. Listen to your doctor’s advice, don’t be capricious and don’t eat or drink just because your stomach rises, you are nauseous and you have no appetite. Of course, if your condition worsens at night or if you have sudden symptoms or are in critical condition, you should go to the emergency room at the first opportunity and inform your doctor of your medical history and experience. It is important to note that patients with ovarian hyperstimulation syndrome should pay more attention to their condition and communicate with their doctors in a timely manner to help them detect the tendency of thrombosis as early as possible to achieve early detection and early treatment to ensure safe passage through the dangerous period!