The principle of Fresnel quasi-phase matching technology used to wide tuning terahertz wave detection is analyzed. We discuss the resonant and non-resonant Fresnel phase matching condition and the effect of Goos Hanchen delay to Fresnel phase matching. The effective nonlinear efficiency during sum frequency generation, the accept angle width of internal total reflective angle inside of the crystal and the absorption of GaAs crystal for three interaction waves also are investigated in more detail. Finally, in order to achieve wide tunable terahertz detection, we present an experiment scheme and experimental setup with Fresnel phase matching by angle tuning.