The invention discloses a roasting method of a high-portion specularite and belongs to the technical field of pelletizing production. The process techniques and equipment of the existing grate-rotary kiln pelletizing production line are improved through experimental study, practical exploration and continuous optimization, such that the optimum thermal parameters can be obtained at various drying and roasting stages of the grate-rotary kiln and the breakthrough in the hematite roasting technique can be achieved, and therefore, stable and qualified finished pelletizes can be obtained from the pelletizing production of the hematite, in particular the high-portion specularite; a set of mature and stable roasting method of the high-portion specularite may be gradually formed, leading to improved practical level of the hematite pelletizing technique, obvious economic benefits and great significance in popularization and use for reference.