The invention provides a mineral source carbocoal charcoal soil conditioner which is prepared from oil shale carbocoal charcoal and auxiliary materials. The oil shale carbocoal charcoal is prepared from oil shale through thermal treatment. The mineral source carbocoal charcoal soil conditioner can condition and repair different kinds of acid soil, gradually improve the soil fertility, improve the crop quality and yield, and achieve the purposes of environmental protection and ecology; in addition, the source of the oil shale is quite wide. The mineral source carbocoal charcoal soil conditioner heats mineral substance or biomass on the oxygen-free condition for pyrolysis, and the oil shale carbocoal charcoal is produced after relevant volatile matter is extracted; according to the oil shale carbocoal charcoal, after the raw material oil shale is subjected to thermal treatment, all bacteria and viruses are killed at the high temperature, and meanwhile the sterilization and disinfection effect on soil is achieved. The preparation method is simple, and the processing cost is low.