The collision-induced spectra of C1∏u→X1∑q+ transition for 39K2 was obtained from 441.56nm line of CW He-Cd+ laser. The analysis of spectra showed that the collision induced transitions from C1∏u(ν'=0, J'=53)were P(△J=+2), R(△J=+2), Q(△J=+1). The calculated wave-numbers of collision-induced spectra were in agreement with the experimental values. The intensity ratio of collision-induced satellite lines and LIF parent lines versus buffer gas pressure, temperature of sample cell were studied andthe physical interpretation was given.