Conducting polymers promise a wider range of successful devices than traditional semiconductors. Differing from the traditional semiconductors in conducting polymers the topology of the system may be significant. Some of the important features such optic and electric properties can be changed largely by loop formation. In this work the loop formation process in conducting polymers has been considered by means of the Green-function method for the electronic spectra fixing. It was shown that at the changing of connectivity of quasi-one dimensional simple polymer strand due to the loop formation two local electronic states are appeared in the electronic spectra of the system. We supposed such model can be important for optic properties of such polymer systems with loops, increase the reaction ability of local loop area, loop stabilization due to the electron-conformational interaction in conducting polymers.