The preliminary level Mandarin language course at UiTM applies the Hanyu Pinyin phonetic system in the teaching of Mandarin pronunciation. In the early stage of learning, non-native speakers face difficulties in learning the phonetic system. Incorrect pronunciation could be an obstacle in understanding the message delivered by speakers. This problem would persist if the pronunciation errors are not identified and corrected at the early stage of learning the Mandarin language. This study investigates the initial consonant pronunciation of 41 Bachelor’s Degree Office Management System students enrolled in the Mandarin Language Level 1 course, namely TMC401 in UiTM Sarawak. Through observation method in simulation tests, the findings of this study showed that majority of the subjects made mistakes in pronouncing the plosives, fricatives and affricates. The results give a great implication to teachers to be more observant and to rectify students’ pronunciation errors in the initial stage of learning. This will curb difficulties encountered in the learning process. In return, with the mastery of accurate pronunciation in the Mandarin language, student’s learning process would become easier and more efficient.