A cell culture apparatus in which liquid can be supplied uniformly/homogeneously among a plurality of culture containers while keeping cost low. In this cell culture apparatus, a plurality of sealed culture containers (1) having fluid introduction ports and discharge ports are provided, and the plurality of culture containers (1) are connected in parallel, forming a single closed culture system. The cell culture apparatus has a single flow channel switching mechanism (8) for switching a plurality of flow channels connected to the plurality of culture containers (1). The flow channel switching mechanism (8) makes the flow channel resistance of one individual flow channel from among the individual flow channels branching and connecting to the culture containers (1) less than the flow channel resistance of the remainder of the individual flow channels. The flow channel switching mechanism (8) forms an individual flow channel having a small flow channel resistance by placing a single flow channel switching member in the closed culture system and changing the orientation and/or position of the flow channel switching member.
