The present invention relates to the field of sintering technology, and discloses a method of controlling the suitable granulation moisture content of a sinter mixture. The method comprises the steps of determining the maximum molecular moisture capacity and the maximum capillary moisture capacity of various kinds of raw materials in the sinter mixture to be controlled; adding the maximum molecular moisture capacity and the maximum capillary moisture capacity of the raw materials together to obtain the water saturation of the raw materials; calculating based on the proportion and water saturation of each kind of raw material to obtain the water saturation of the sinter mixture to be controlled; controlling the suitable granulation moisture content of the sinter mixture to be controlled according to the known suitable granulation moisture content and water saturation of the sinter mixture and based on the obtained water saturation of the sinter mixture to be controlled. By adopting the method, the suitable granulation moisture content a sinter mixture can be determined rapidly.