It is not recommended to ride a motorized bicycle during pregnancy because a fall while riding a motorized bicycle may induce a miscarriage. As early as in the early stages of pregnancy, due to the embryo is not very stable, riding a motorcycle when the road is more rugged, after the fall, may induce preterm miscarriage, in the middle and late stages of pregnancy, due to the physical mobility, riding a motorcycle is also prone to fall, which may result in miscarriage, preterm delivery. Therefore, women during pregnancy is not recommended to ride an electric bicycle, do not ride a bicycle, should avoid high-intensity exercise, such as running, jumping, etc., can be appropriate to exercise, but to avoid exercise too much, when you feel tired, should rest in time, and should be regular medical pregnancy checkups, to understand the development of the fetus.