A consistent theoretical approach, based on a new wave function to ddμ molecular ion is developed. The
present method provides a calculation of nuclear fusion rate for (J,!) = (1,1) level, a resonance state. The
behavior of the wave function is important for the calculation of the element matrixes related to nuclear and
photon fields [1,2,3]. In this work, we introduce the below wave function for the ddμ1,1 ordinary ion.