The present invention relates to a self-diagnosis apparatus for a health tester and a self-diagnosis method for a health tester. For a health tester that displays health diagnostic information of a user obtained using a strip and has a communication function capable of transmitting the diagnostic information to an external device, the self-diagnosis apparatus includes: a virtual strip unit mounted inside of the health tester and configured to include one or more virtual strips in which predetermined specific data is measured; a virtual strip selector configured to select at least one virtual strip from the one or more virtual strips through switching; and a diagnosis and determination unit configured to a measurer and diagnose a status or an occurrence of a failure of the health tester.