For women who are not allergic to pineapple, eating pineapple during pregnancy can replenish the body with micronutrients and other nutrients, while for those who are allergic to pineapple, it is likely to cause diarrhea, vomiting and other symptoms. In addition, for pregnant women with gestational diabetes, eating pineapple may cause fluctuations in blood sugar. Pineapple is rich in vitamins and a variety of trace elements, for pregnant women who are not allergic, appropriate consumption can supplement the body with nutrients. However, some pregnant women are allergic, eating pineapple at this time is likely to cause allergic reactions, leading to abdominal pain, diarrhea, vomiting and other symptoms, it is not advisable to eat. In addition, for pregnant women with gestational diabetes, pineapple should be eaten with caution to prevent large fluctuations in blood sugar. Pregnant women are advised to take a balanced diet and eat some other fresh fruits and vegetables in addition to pineapple. If there are other dietary problems, it is recommended to consult a professional doctor or dietitian for guidance.