The double-slit interference of electrons is analyzed by using the Feynman functional integration (path integrals),and the conclusion is in keeping with light's. Finally,on the basis of harmonizing the Vierbein representation of the local Lorentz group gravitational gauge theory and the special theory of relativity (SR) with the quantum theory as a unified logical system,the interpretations of many different opinions discussing tile double-slit interference of electrons are also clarified in this paper.