Mohammed J. Jader, Theoretical Study of Energy Distribution Function and Other Parameters for CF4-He Gas Mixtures Discharge, Journal of Engineering and Applied Sciences, Volume 13,Issue 18, 2018, Pages 7648-7655, ISSN 1816-949x, jeasci.2018.7648.7655, (https://makhillpublications.co/view-article.php?doi=jeasci.2018.7648.7655) Abstract: In this research, the electron energy distribution function of electrons in plasma discharge is studied for CF4-He gas mixtures. The Boltzmann equation was solved by using Fortran computer program. The Boltzmann transport equation was solved by using two-terms approximation for pure gases and mixtures. This method of solution is used to calculate the electron energy distribution function and electric transport parameters were evaluated in the range of E/N varying from 1H10-17#E/N#5H10-15 V.cm2. The electron energy distribution function of CF4-He gas mixture is nearly of Maxwellian distribution at 1, 2 Td and when E/N$5 Td the distribution function is non Maxwellian. Also, the mixtures are have different energy values depended on transport energy between electron and molecule through the collisions. Keywords: Electric discharge;collisions;gas mixtures;Boltzmann equation;CF -He;Maxwellian distribution