This study seeks to examine the effect of task-based activities (five specific types of tasks: pictures, multiple choice, matching, fill in a form and short-answer questions) on English as a foreign language students' listening comprehension. The participants of this study consisted of (76) second year prep school students divided into two groups; an experimental group and a control group. Listening test developed by the researcher was used to measure such improvement. Before the experiment a listening pretest was administered to both groups. The experimental group students received treatment of listening comprehension via using task-based activities. A 8-session treatment was applied for the experimental group students, while the control group students followed their regular method. After the experiment, the same listening post-test was administered to the groups. A t-test was used to find the effect of using task-based activities on the students' listening comprehension. Findings revealed that task-based activities were effective in enhancing the listening comprehension of the participants in the experimental group. Findings also indicated that there was a significant relationship between the four tasks of " pictures, multiple choice, matching, fill in a form" and listening comprehension. However, no such relationship was observed between the task of " short-answer questions " and listening comprehension. Likewise, results showed that practicing listening with task-based activities can become a good way to prepare students to the advanced higher levels of comprehension