Flexible Cantilever Shed is a variant rockfall interception system, which is horizontally installed on a near-vertical slope. After the falling rocks crash the flexible net, will move outside the protection area below by bouncing or rolling down, ensuring that the covered area is free from the hazards of rockfall. The same protection energy level as the normal rockfall mitigation system can be achieved, and rockfall clearance is usually not required. It can only applied to scenes of narrow areas close to the foot of the steep slope, such as cutting slopes, hillside roads, and roads near seashore cliffs. The serve energy level of the system is no less than 1,500kj.