In　order　to　improve　the　imaging　quality　in　extremely　low　illumination　situation,　a　driving　circuit　of　high　resolution　and　sensitivity　camera　was　developed　to　use　back　illumination.　Frame　transfer　electron　multiplying　gains　(EMCCD)　with　1024x1024　pixels　named　CCD201　from　UK　E2V　technologies.　The　circuit　uses　integrated　CMOS　driver　EL7457　and　EL7156　as　the　driving　module.　A　programmable　control　voltage　power　source　was　adopted　for　the　electron　multiplying　voltage　to　realize　program-EM　control.　A　bias　voltage　circuit　with　a　high　efficiency　and　precision　was　designed　for　the　CCD201　complex　voltage　supply　system.