The uneven elongation between flange and web can make long tongue in the head of H-beam, which can lead to too long crop end length. In order to control the tongue length of H-beam head, different elongation ratio between flange and web is put forward to control the head displacement of H-beam. If the flange and web elongation is uniform, the loss of crop end length will be reduced. At the same time, different cooling speed of flange and web is set to keep the section uniform temperature. Experimental investigations of H-beam rolling are carried out on the universal mill in the Rolling Lab of Hebei polytechnic University. Comparisons between experimental value and simulation results prove the correctness of elongation ratio of flange and web.