Allergies are more common in young and middle-aged people, and desensitization is the only allopathic treatment, but it takes 2-3 years to persist. Many female patients are faced with a major choice in their lives: to “desensitize” or to “get pregnant” first? What if I get pregnant during desensitization treatment? In fact, the impact of desensitization treatment on the safety of the fetus during pregnancy has long been established, and international and the latest domestic guidelines agree that: 1. First of all, desensitization treatment is the only allopathic treatment for allergic diseases, which can greatly reduce the possibility of allopathic medicine; allopathic medicine itself also has corresponding risks to the fetus; if the patient sneezes and has heavy symptoms, it will also have adverse effects on the fetus in early pregnancy, such as sneezing to miscarriage, nasal ventilation, and nasal ventilation. Adverse effects on maternal sleep and general state to fetal hypoxia and malnutrition. Secondly, desensitization therapy has a history of more than 100 years and although it does have risks, many studies have confirmed its safety and efficacy under the premise of full risk assessment. 3. There is no evidence to date that insisting on desensitization therapy in pregnant women has teratogenic effects. 4. Therefore, it is not recommended to “start” desensitization therapy during pregnancy or planned conception. 5. Patients who are actively preparing for pregnancy should not schedule desensitization therapy as much as possible. In short, if there is no plan to get pregnant in the short term (within six months), desensitization treatment should be started in a timely manner if the condition requires it. 7. If pregnancy occurs unexpectedly during desensitization treatment, the pros and cons should be weighed and analyzed. 8.