With four kinds of back passivation aluminum paste samples prepared with different glass powder additions, back passivated crystalline silicon solar cells (PERC) can be obtained by co-firing with the back silver and the positive silver in the chain type rapid sintering furnace of the industrial production line. The scanning electron microscope (SEM), resistance tester and cell efficiency sorter are used to characterize the cell sample, followed by an inquiry into the effects of glass powder addition mass fraction, sintering temperature and printing unit consumption on the thickness and efficiency of local aluminum-doped back surface field (L-BSF). The results show that with the increase of glass powder content or sintering temperature, the thickness of L-BSF layer increases, while the conversion efficiency and open-circuit voltage shows a trend of an initial increase and a subsequent decrease. When the glass powder content is 1.2%, the sample is characterized with the highest conversion efficiency, reaching as high as 21.6%. When the sintering peak temperature is maintained at 780 ℃, the conversion efficiency of the sample is the highest, up to 21.4%; with the increase of printing unit consumption, the conversion efficiency first increases and then decreases; meanwhile, the open-circuit voltage decreases, while the thickness of L-BSF layer remains basically unchanged. When the printing unit consumption is 0.18 g, the conversion efficiency of the sample reaches up to 21.6%, the maxim of its conversion efficiency.