Most individuals are not born to be public speakers; they are educated to be developed as one. When they are in front of an audience being the focus of attention, they experience emotions leading to nausea and excessive sweating because of fear and anxiety. Individuals who have a fear of speaking in public suffer from strong fear in social performance situations and social spheres, which is known as glossophobia. This research aims to discover the different factors that cause speaking anxiety among the pre-service teachers of Mountain Province State Polytechnic College - Teacher Education Department (MPSPC-TED) in Philippines and to suggest strategies that could help prevent them from having glossophobia problem. Samples of interview output, coding, and careful analysis and interpretation of the gathered data from the selected 50 undergraduate students who had research oral presentations, oral lesson demonstrations, and oral speaking presentations have been transcribed and found out major themes that cause glossophobia problems, i.e., linguistic obstacles, audience’s manifestation, mastery of the topic and particular motives. Knowing what causes these problems, this study proposed the DISRUPT strategy to reduce students’ public speaking anxiety effectively.