A biochemical reaction apparatus used to carry out a chemical reaction of fluid includes a cartridge including a container which is at least partially structured with an elastic body, the container including inside thereof a plurality of chambers to contain the fluid and flow passages to connect the plurality of chambers and rollers to apply an external force to the elastic body and deform the elastic body to move the fluid in the flow passages or the chambers by rotationally moving on a front surface of the elastic body while the roller contacts with the front surface of the elastic body, and in a cross-sectional shape of the roller, which is perpendicular to a roller shaft, at least not less than three corners are included, and the cross-sectional shape is a shape in which sides between the corners are equal in length.