The linear responsivity comparison experiment of charge-coupled device (CCD) to 808 nm high and low repetition frequency laser with 100 fs pulse width and 808 nm continuous wave (CW) laser is studied. Experimental results show that the power responsivity ratio of CCD to the laser with 100 fs pulse width and CW laser is close to 1 when CCD is in linear responsivity range, which means the responsivity is no difference. From CCD principle, the response output is in proportion to the laser power received in integrated time, which indicates that the CCD power responsivity has nothing to do with width of pulse and repetition frequency of laser.