Self-repair in conversations is necessary for the speakers to make clearer what they are speaking to the listeners. Simultaneously, self-repair helps talks be kept on and makes conversations smoother and more effective. There are many reasons why speakers in conversations want to repair their trouble source. Based on the theory of self-repair from Schegloff, Jefferson & Sacks, data from conversations in Vietnamese television films with everyday familiar topics which have been issued from the 1980s up to now and based on the theory of the pragmatics of illocutionary forces, the paper presents and analyzes the pragmatic functions of self-repair in conversations in Vietnamese television films so that learners of Vietnamese can have more effective conversations in their daily life.