The frequency range of THz radiation is 0.1×1012～10×1012 Hz, but the frequency of the band of biomolecule greater than 1014 Hz. Hence the interaction of THz photon with the bond of biomolecule can not lead to the resonance effects. However, according to Frohlich theory, living biomolecule system is a extreme coherence's system, its motion state poeeseees the collective vibration effect. The range of coherent vibration frequency is 0.02×1012～2.0×1012 Hz. Hence, the interaction of THz photon with the living biomolecule system can lead to the resonance effect. Under dipole approximation, the Hamiltonian of the interaction of THz photon and biosystem vibrator can take. To solute the Schrdingar equation, we can explain some fluorescence effect that are cause by THz photon’s action. Other, we discussed the mechanism on action effects of the laser photon acting to protein or cell membranes.