The invention relates to a device for detecting flocculation units of toxoid. The device comprises a sample rotating disc, a reagent compartment, a reaction module and a recording device, wherein the sample rotating disc is disc-shaped and can independently accommodate a standard product and a to-be-detected sample, a reaction solution and a specific antibody are placed in the reagent compartment, the reaction module is provided with a temperature control device, a laser source is arranged on the side wall of the reaction module, and a scattering turbidimetry detector is arranged in a position, which forms 90 degrees with the laser source on the side wall. The sample rotating disc, the reagent compartment and the reaction module are automatically electrically connected, and the reaction module is electrically connected with the recording device. The device can independently perform reactions, record data about time and light adsorption conditions and fit standard curves, automatic detection is realized, results of flocculation units of toxoid are calculated precisely, errors caused by manual result reading are reduced, the result accuracy is improved, and the detection cost is reduced.