I. Objective To study and analyze the prevention and nursing methods of deep vein thromboembolism in obstetrics and gynecology patients after surgery. The use of anesthetics in obstetrics and gynecology patients leads to the relaxation of the walls of the venous plexus, which causes bruising, and the patients’ postoperative weakness often forces them to be in a state of braking or need to lie down for a long period of time, which can lead to the slowing down of the blood flow rate and lead to deep venous thrombosis [1]. Deep vein thromboembolism is often life-threatening, so early prevention and active control of postoperative deep vein thromboembolism in obstetrics and gynecology patients is very important [2]. Second, data and methods 1, Na-exclusion criteria: (1) can take the initiative to cooperate with medical and nursing staff to complete all nursing work, compliance is good (2) patients have received the relevant examination, with the group of research indications. Exclusion Criteria: (3) Patients with hematological, metabolic, organic and systemic pathologies (4) Neurological and psychiatric disorders, old age and infirmity, communication disorders, and inability to move on their own (5) Patients with venous thrombosis (6) Patients with prolonged fever that does not go away and are in the period of waiting for investigation (7) Patients with other organ system diseases that require immediate surgical treatments (8) Patients who are pregnant and have gestational hypertension or diabetes mellitus (9) Patients who suffer from severe trauma or diabetes mellitus (10) Patients who have severe trauma or diabetes mellitus. (9) Severe trauma, hemorrhage, hypotension, and even patients who have gone into shock. 2. Methods (1) Before surgery, we should fully understand the basic condition of the patients, and we should pay great attention to patients who have a history of long-term smoking, drinking, severe trauma, extreme obesity, cardiac insufficiency, diabetes mellitus, varicose veins of the lower limbs and other patients who have been marked with a special label; we should ask for a detailed history and check the past history of the patients, and we should combine the various indexes to make a comprehensive assessment. (2) Explain the relevant precautions during surgery for patients and their families, emphasizing the risk factors, causes and adverse consequences of deep vein thromboembolism [4], so that patients can be more vigilant and actively cooperate with the preventive care work. (3) Communicate more with patients, help them relieve tension, anxiety, anxiety and other negative emotions, patiently explain the importance of early postoperative activities to prevent deep vein thrombosis, improve the enthusiasm of patients to cooperate with preventive care; guide patients to the precautions and methods of the correct activities [5~6]. (4) Do a good job of dietary guidance, patients should be encouraged to drink more water, high fiber, low-fat diet, avoid tobacco, alcohol, strong tea, coffee and other stimulating foods. (5) After the operation, patients should be provided with a comfortable and quiet environment, and given appropriate positional care, help patients elevate both lower limbs about 20 ° ~ 30 °, in order to promote the blood return of the patient’s lower limbs, to prevent thrombosis at the same time to ensure that the blood supply to the organs is sufficient; should also be closely observed the patient’s lower limbs of the temperature, color, superficial veins, circumferential changes and swelling, etc., and mark and record in a timely manner, and abnormalities should be immediately notified to the doctor. Abnormalities should be immediately notified to the doctor and corresponding nursing measures should be given [7~8]. (6) Instruct the patients to carry out deep breathing exercises, appropriate foot and ankle exercises and knee flexion and extension exercises, and carry out appropriate activities when the condition permits, and inform the patients’ families to pay attention to the intensity of the activities and avoid excessive exercise. (7) When establishing venous access, nursing staff should avoid venous puncture of the lower limbs, especially the left lower limb puncture, if the puncture site is found to be inflamed, the venous access needs to be re-established immediately, and an inflatable pressure pump can be given if necessary [9], in order to help the patient improve the blood circulation of the lower limbs. (8) For high-risk patients with deep vein thromboembolism, under strict control of elasticity and pressure, elastic stockings or elastic bandages can be given; at the same time, anticoagulants such as heparin can also be used as prescribed by the doctor in order to improve the local circulation of the lower limbs and prevent thrombus formation. Conclusion After the comprehensive preventive and nursing interventions, the patients’ understanding of disease-related precautions was significantly improved, and they were able to consciously pay attention to their own discomfort symptoms, find out the changes in their conditions and deal with them in time, which reduced the pain of the patients, shortened the hospitalization time, and at the same time, lowered the economic burden of the patients, and improved the quality of life of the patients. Preoperative and postoperative intervention guidance for patients and their families effectively improved the clinical nursing effect, the incidence of pain and swelling of the lower limbs of the patients was significantly reduced, and the effect of rehabilitation therapy was superior, which to a greater extent met the expectations of the patients and made them more satisfied. In summary, the active implementation of comprehensive preventive interventions is of great value to obstetrics and gynecology patients, effectively promoting the postoperative rehabilitation of patients and reducing the occurrence of deep vein thromboembolism.