Bike sharing is a booming industry in China during the past two years. Mobike, one of those bikes sharing companies, has distinguished itself from the competitors by its operations management. This essay focuses on the evaluation of how Mobike Company manages their bikes and how does the company control their quality. The bike sharing company needs to fulfill the demand during rush hour so it is an inevitable issue about capacity, inventory and control to a bike sharing company. At last, the essay gives recommendations related to the evaluations for improvement.