The present invention is applicable to the technical field of computers, and particularly relates to a COVID-19 pandemic prevention and control system based on Internet of things, comprising a COVID-19 colloidal gold kit provided with a test line sensor and a server. The COVID-19 colloidal gold kit provided with the test line sensor is configured to perform COVID-19 test on a user, and the test line sensor obtains a test line result and uploads same to the server; the server is configured to determine a diagnosis result of the user according to the test line result. The prevention and control system provided in embodiments of the present invention uses the COVID-19 colloidal gold kit, which has the advantages of being fast, simple and convenient, high stability, cheap, and capable of performing self-testing, as a COVID-19 test tool, and the test line sensor mounted in the kit obtains the test line result and uploads same to the server, so that users can be tested conveniently and quickly, and centralized management of COVID-19 test results can be implemented.
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