The bonding process is an important nature of bituminous coal, the actual production of coal in a weak adhesive bond index G value greatly influenced by storage period, as the storage period of growth, a weak adhesive bond index G value of coal is decreasing. So stick to the weak coal procurement should be some restrictions: the amount should be based on timely procurement in accordance with procurement plans to ensure that the weak should not be too sticky coal storage period generally not exceeding 15 days usage. In coking coal blending, the blending program by optimizing, with a weak stick into the appropriate not only to reduce the coke of coal ash, sulfur, to ensure the quality of coke, the coke can to reduce costs. Now stuck on weak coal caking index G value decreased to conduct a preliminary study.