Abstract: With the development of modern science and technology， the reliability of technical artifacts has increasingly become the focus of research. At present， the academic circle is mainly focused on the reliability analysis of technical artifacts in engineering， and seldom uses philosophical methods to analyze the reliability of artifacts. Accordingly， the reliability of technological artifacts is explored from the four aspects of philosophical significance-the basis of the reliability of technical artifacts， that is， the reality of technical artifacts; the three components of technical artifacts(i.e.， structure， function and elements); the intentionality and timeliness of technical artifacts. Furthermore， the important factors that may affect the reliability of technical artifacts are analyzed， and the philosophical meaning of the reliability of technical artifacts is studied as well.

Key words: technical artifact, reliability, philosophical analysis, philosophical significance