The article dwells on psychological and pedagogical factors influencing the process of building professional competence in English oral interaction of prospective military officers. It is noticed that consideration of psychological characteristics of third-year university cadets is carried out in parallel with the development of their creative abilities, motivation, world outlook, self-esteem, and emotionality. That is why in order to enhance the emotional factor within the framework of the methodology designed to build professional competence in English oral interaction the author suggests using video materials in simulation format of the so-called live-talk video chat (video chat in real time). The necessity of applying learner centered approach to teaching English oral interaction to prospective military officers as active personalities, as well as adherence to the basic principles of communicative method of building professional competence in English oral interaction of prospective military officers with the use of multimodal learning tools based on the interactive communication and visual sensory system are substantiated in this paper. The multimodal learning tools as facilitating visual aids improve perception of professional English authentic videos and unload human memory. The results of the questionnaire surveys held among cadets of Kyiv Military Institute of Telecommunications and Informatisation named after Heroiv Krut and Serhii Koroliov Zhytomyr Military Institute showed that 56% of respondents indicated that professional English oral interaction caused the greatest difficulties in the English classroom, 28% of cadets had difficulty in perceiving foreign language aurally. The least difficulty arose in the process of doing individual grammar exercises and reading professional texts (23% and 8% of cadets respectively). These data testify the relevance of implementing the activity component of learner centered approach to building cadets’ competence in English oral interaction basing on the key principles of the communicative method.