The invention discloses an isothermal chain multiple displacement detection card of pathogen nucleic acid. The isothermal chain multiple displacement detection card of the pathogen nucleic acid utilizes the detection card which is prepared through a nucleic acid isothermal chain displacement method and a colloidal gold detection technology to carry out multiple detection on HBV-DNA, HCV-RNA, HIV-RNA, and TP-DNA. The isothermal chain multiple displacement detection card of the pathogen nucleic acid has the characteristics of simple and rapid operation, high sensitivity, and no need of professional equipment. The pathogen nucleic acid to be detected is not amplified in the detection process, so the detection card has the advantages of preventing amplified matter cross contamination in laboratories and preventing false positivity, can be widely used in high sensitivity pathogen nucleic acid detection in the fields of clinical detection, inspection and quarantine, infectious disease control, biological technology and the like, and has a wide application prospect.