The utility model relates to a multichannel colloidal gold reading instrument comprises the processing system in shell and the shell. Characterized by: processing system includes controller and opticscollection module, image processing module, touch -control display module, internet transmission module, print module, detection zone module, storage module, the multimedia playing module be connected with the controller, optics collection module comprises LED light source, image sensor and two -dimensional code scanner, the individual event of detection zone module and shell detect the card detect mouthful, three detect the card and detect and mouthful link to each other. It can support the normal operating of integral module system to have the controller of highly assembleing the chip. Theutility model has the advantages of easy operation, the range of application is wide, and many channel parallel are efficient, and the testing result is accurate reliable, provides strong evidence with tracking for the supervision of food security. Be applicable to that environment and food safety monitoring, medical diagnosis, bacterium are surveyed, fields such as the dynamic monitoring of biochemical reactions in -process and scientific research.