Herein we report a case of restless legs syndrome (RLS) during pregnancy in a 32-year-old woman who began feeling pain in her feet at night at 30 weeks of gestation. She could relieve the pain by moving her legs, but her symptoms worsened, preventing sleep. She was diagnosed with pregnancy-related RLS. Neither carbamazepine nor gabapentin alleviated her symptoms effectively, but the discomfort spontaneously improved two months after delivery. RLS during pregnancy leads to sleep disorders, which are associated with adverse pregnancy outcomes. More attention should be given to RLS during pregnancy.