The present research aims at investigating the effect of an electronic learning environment on developing designing skills of electronic lessons among the teaching staff of Mosul University. The experimental design pretest posttest experimental group design was employed in the research. To examine the validity of this hypothesis, a sample was chosen from Mosul University. It consisted of (49) instructors. An electronic practical test was used. It comprises of (30) practical items of the type of clicking on the hot spots to measure the designing skills of electronic lessons. After applying the pre-test and the posttest, the results indicates that there is a statistically significant difference between the mean scores of the pre-test and the posttest in the test of skills designing electronic lessons for the benefit of the posttest. The results reveal the effect of the electronic learning environment on developing designing skills of electronic lessons.