We target our target users to young office workers in first- and second-tier cities. Through field interviews and extensive user research, we found that many first- and second-tier cities are banned from electricity and electricity. Some commuters are facing challenges in commuting. Office workers who have just stepped into work are hard to pay privately. The cost of the car, shared bicycles are not easy to find a car during the peak commute, and the folding moped + subway + folding moped has become a good commute choice. We aim at the needs and find three design points. First, it makes folding and unfolding more convenient. Second, it can still be implemented after folding. Third, the structure is more compact. Completed the design of our city commuter folding bike.