In the experiments, excited by a laser of 532 nm, the chemically enhanced bacteriorhodopsin″s state conversions are researched at real-time by using the method of different absorption spectrum. The experiments show that there is a steady middle process at 585 nm obviously. From the experiments and molecular dynamics, a model is set up, which suits for the different absorption spectrum and studies the simulation and numerical value analysis to bacteriorhodopsin′s dynamical process after it is excited by the laser.