According　to　the　impact　disturbance　which　is　cause　by　the　printing　machine　rigid　gap　or　paper　receiving　gear,　is　difficult　to　suppression　using　the　conventional　PID　algorithm,　First　of　all　a　compensation　method　based　on　Small　Gain　Principle　is　proposed.　This　method　is　using　filter　with　positive　feedback　adding　on　the　system　to　impact　disturbance　compensation.　Secondly,　the　stability　conditions　are　given.　Finally　the　simulation　and　experimental　verification　is　given.　The　result　show　that:　the　positive　feedback　filter　compensation　method,　eliminating　the　systematic　static　error　and　suppress　the　impact　of　system　greatly.　This　method　is　simple,　easy　to　implement,　and　does　not　change　the　original　structure　of　control　system.　It　has　certain　engineering　application　value.