Before drinking brown sugar pearl milk tea during pregnancy, it is best to seek advice from a doctor or nutritionist. They can provide professional advice based on your personal health and pregnancy needs.

Generally speaking, it may be okay to drink brown sugar pearl milk tea in moderation, but you need to pay attention to the following points:

1. Sugar intake: Brown sugar pearl milk tea usually contains higher sugar content . During pregnancy, excessive sugar intake may increase the risk of blood sugar fluctuations and weight gain. Therefore, control your sugar intake in moderation and try to choose low-sugar or sugar-free versions.

2. Caffeine intake: The tea leaves in some pearl milk teas contain caffeine. High caffeine intake may be linked to problems related to pregnancy, such as affecting fetal development and affecting sleep quality. So, if you're sensitive to caffeine, it's best to choose a tea-free version, or limit your intake.

3. Food safety: Ensure that the food used is fresh, hygienic, and meets food safety standards. Especially with pearls, make sure they are cooked and processed and do not contain potential risks.

The most important thing is to maintain a balanced diet and adequate nutrition during pregnancy to ensure the health of the mother and fetus. If you have any concerns or concerns, you should seek professional medical advice. They will give you the most suitable solution based on your personal situation