A method combining several pixels into a pixel using Binning technology is proposed,considering that delicacy of linear CCD is lower in spectral analysis. Thereby several performances of linear CCD,such as responsibility,sing-noise ratio and frame speed are enhanced. The researches include discussing the sign output structure of a CCD,and capturing the spectrum family,and analyzing data of sample. They indicate that combining sensitivity sub-family of spectrum together (Binning) through changing drive sequence of CCD,can get higher sensitivity and signal-noise-ratio (SNR). The influence of Binning on near pixels is discussed.