CELL CULTURE SYSTEM

A cell culture system includes a culture bag made of a flexible packaging material and having a plurality of ports, a medium container that stores a medium to be transferred to the culture bag, and a control part that controls the supply of the medium, tubular members are connected to the respective ports to circularly connect the culture bag and the medium container through the tubular members, the tubular member connected to a first port of the plurality of ports is provided with first supply unit (e.g., pump), and the tubular member connected to a second port of the plurality of ports is provided with second supply unit (e.g., pump), and the control part controls the operation of at least the first supply unit or the second supply unit to circulate the medium in the culture bag and the medium container.