In　this　paper,　a　space　point　target　detection　system　is　designed　based　on　highly　sensitive　CMOS　sensor.　Firstly,　noise　reduction　of　CMOS　sensor　image　is　carried　out　to　improve　the　sensitivity　of　the　detection　sensor;　secondly,　by　using　DSP+FPGA　embedded　architecture,　a　point　target　detection　algorithm　based　on　star　map　matching　is　designed　and　the　principle　and　steps　of　the　algorithm　are　introduced　in　detail.　Finally,　the　electronic　star　map　simulator　is　used　to　test　the　detection　system.　The　results　show　that　the　embedded　system　can　process　1　024×1　024@20p　format　videos　in　real-time,　and　the　sixth-magnitude　stars　can　be　detected.　When　the　SNR　is　greater　than　6　and　the　pointing　error　is　less　than　1°,　targets　which　with　different　speed　and　size　can　be　detected　with　a　detection　accuracy　of　nearly　100%.　In　summary,　the　space　point　target　detection　method　has　high　computational　precision,　strong　adaptability　and　high　reliability,　and　can　be　effectively　applied　to　the　space　point　target　detection.　©　2018,　China　Science　Publishing　&　Media　LTD.　All　right　reserved.