The utility model relates to a side
irradiation type multi-sample reaction device which comprises a
temperature control liquid bath device, a reaction device and a
light source device, the reaction device is of a cake-shaped structure, the reaction device is arranged in the
temperature control liquid bath device, the two sides of the reaction device are both perpendicular to the horizontal plane, one side of the reaction device is connected with a driving motor, and the other side of the reaction device is connected with the
light source device. The
light source devices are arranged on the two sides of the cake-shaped structure, a plurality of reactor holes are symmetrically formed in the reaction device, the reactor holes comprise reaction holes and illumination holes, the reaction holes are formed in the
narrow face of the cake-shaped structure, the illumination holes are formed in the two sides of the cake-shaped structure, the reaction holes and the illumination holes are communicated with each other, and the reaction holes are communicated with the illumination holes. The reaction holes are correspondingly provided with sealing covers, on one hand, the uniform mixing function is achieved, on the other hand, when the reaction holes rotate, part of the structure is sequentially immersed into water of the
temperature control liquid bath device, the temperature
control effect is achieved, and meanwhile illumination is more uniform through the light source device with the two faces for illumination.