The invention discloses a flexible hydrocracking method. The method consists of: passing mixed feed of wax oil and catalytic cracking diesel oil, and hydrogen through a hydrotreating reactor, and leaving the hydrotreating effluent to enter a first separator to undergo gas-liquid separation; making part of or the total hydrotreating generated oil enter a second separator to undergo gas-liquid separation, and fractionating the liquid, thus obtaining a light product and tail oil; returning the tail oil to the hydrotreating reactor and a hydrocracking reactor respectively to undergo reaction, and letting the hydrocracking effluent enter the second separator. By adjusting the blending proportion of the catalytic cracking diesel oil and the wax oil, and the distribution proportion of the hydrotreating generated oil, flexible adjustment of the hydrogenation product quality and yield can be realized, especially the yield proportion adjustment of high arene heavy naphtha and low-sulfur diesel oil, and nature control. On the basis of improving product quality, the method provided in the invention can achieve an ideal comprehensive processing effect and can further enhance the raw material adaptability.