Compound-related technology is an efficiency method to improve the performance of laser detection system.By analyzing the characteristics of two type laser warning system(element detector and imaging),a compounding design is presented.Laser warning and alert system based on element detector has high sensitivity and fast responding time,but its angle resolution,while imaging type system has much higher angle accuracy,but its sensitivity is low and the reaction time is long.To design a compound system which combines these two types of detection units into one will maintain the advantages of each type while overcomes its insufficiency.Experiments show that the method can effectively improve the system detection performance.The developed device has high sensitivity,fast response and good angle resolution.