The outline of the product bidirection flap barrier is shaped after urgent the stainless steel plate. The shape is featured as a satisfying look, a very good wanting, stainless and sturdy. The system is provided with a normal electrical interface and is easily built-in into the product with learn/write facilities. A special control system is supplied within the product to fulfill the requirement of fire control, so that the graceful passage circulation is ensured, realizing a timely diverting of passengers. The product is featured as stable in efficiency, secure and dependable, and can be utilized widely in the places the place passenger circulate is great and monitoring is required equivalent to stations, harbors and guest house.