Abstract: The Doppler feedback coefficients are calculated by the interpolation andgroup collapsing method from multigroup self-shielding factors and infinite dilu-tion cross sections rather than effective resonance integrals by using resonancedata base. Since many updated sets of multigroup data are in existence to be se-lected, the calculation process can be simplified. The heterogeneous effects aretaken into account by equivalence relation. The computer code of Doppler feedback coefficients is created on computerCYBER-825 and PDP-11. The results calculated are in good agreement with theexperiments.