The present study attempted to discover the impact of code-switching on the improvement of the
speaking ability of the Intermediate EFL learners. In order to have homogeneous subjects, all 44
participants of the study were given an achievement test. After random assignment of the
participants to the comparison and experimental groups to make sure that they belonged to the same
population the subjects were asked to deliver a five-minute description on a picture, as the pretest.
The participants of both groups were asked to participate in speaking activities. The subjects of the
comparison group were not allowed to use their L1, while the participants of the experimental group
were allowed to code switch whenever they came short of vocabulary. After 10 sessions of treatment,
a posttest similar to the pretest was administered. The result of the study indicated that there was a
statistically significant difference between the groups. Therefore, it was concluded that code
switching can be used as a technique to improve speaking skill.