The present research aimed at investigating the effectiveness of using a shadowing video based program in improving prospective teachers' teaching skills and English language proficiency. The study followed the quasi experimental research design of one experimental group and pre/post application of the research instruments. The participants of the research were (30) prospective teachers as an experimental group. The instruments of the research were: a teaching skills observation sheet and an English language proficiencytest. The results of the research indicated the improvement of teaching skills and English Language proficiencyof the prospective teachers significantly, based on the post results of the observation sheet and the proficiency test compared to the results before using the program and this indicated the effectiveness of this program.. In addition, there is a positive correlatin between the teaching skills and the language proficiency.