The heat dissipation technique of projector(s) is always a subject with continuous research and development needs. It is particularly important toimprove existing methods of heat dissipation and develop new techniquesin the face of improve electronic circuitry efficiencies. In this regard, theobjective of the present thesis is to investigate and discuss the appropriateanalysis of thermal problem in projector for the purpose of understandinghow and under what conditions heat dissipation occur, in order to achieveimprovements in current heat dissipation techniques, and to attain idealoperating temperature and internal systems heat control. We began our study by thermal experiments and used the FLOTHERM V4.2 simulation software to provide a basic internal projector systemsthermal analysis. Results of experiments and simulations were used toanalyze current and systems heat flows, which served as the basis for ourrecommendations to improve existing heat dissipation techniques. Making comparisons between the experiments and simulations analysis, we have arrived at the following conclusions and recommendations. (1)The main heat dissipation way of bulb is the pressure air from blower. (2)The design of Air Guide could improve the efficiency of bulb heat dissipation greatly. (3)The proper elevation of blower could improve the efficiency of bulb heat dissipation. (4)The design of light screen, besides preventing the light source of the bulb from exposing, could also lower the speed and rectification to the pressure air of vent and then reduce the noise of system.