The ready mixed concrete using spontaneous combustion coal gangue to replace natural sand and gravel was prepared. Also, effects of additional water and pre wetting time on workability and strength of ready mixed concrete were investigated. On this basis, the study on the resistance to chloride ion permeability and frost of ready mixed concrete with ready mixed spontaneous combustion coal gangue aggregate added was carried out. The results show that the ready mixed concrete with spontaneous combustion coal gangue aggregate added can meet the requirement set forth in GB/T 14902—2003 on ready mixed concrete quality standards including the mixture slump, slump gradual loss, strength grade, resistance to chloride ion permeability and freeze thaw when the additional water and pre wetting time are suitable and the admixture and concrete additive are used.