It is a multi-functional food safety testing instrument integrating colloidal gold detection module, spectrophotometric detection module and constant temperature fluorescent PCR detection module. In addition to the advantages of colloidal gold detection module and spectrophotometric module, it can also quickly detect pathogenic bacteria and animal origin, which is very suitable for regulatory environments such as comprehensive testing rooms and mobile fast inspection vehicles. The multifunctional food safety detector is a multifunctional detection instrument that integrates a spectrophotometric detection module, a colloidal gold detection module, and a constant temperature fluorescence detection module. Support more than 150 kinds of testing items such as physical and chemical, antibiotics, prohibited additives, pathogenic bacteria, mycotoxins, animal-derived components, animal diseases, etc., and the detection accuracy of some testing items can reach the semi-quantitative level. It is very suitable for the equipment of food safety testing room and food safety testing center with many daily testing items.