The invention discloses a fracturing pump power driving system. The fracturing pump power driving system adopts a turbine engine for driving, the turbine engine can take natural gas as fuel 100%, andcan replace diesel consumption in diesel engine drive, the fuel cost of a customer is reduced, the turbine engine has the advantages of being small in size and small in weight, the size, the weight and the like of the fracturing pump power driving system are greatly reduced, the turbine engine is directly connected with the input end of a reducer casing of a fracturing pump, a transmission devicebetween the fracturing pump and the turbine engine is simplified, a transmission shaft or coupler is omitted, the whole length of the fracturing pump power driving system is greatly shortened, according to the technical scheme, a power source is the turbine engine, the transmission device is the reducer casing of the fracturing pump, an execution element is the fracturing pump, the structure is simple, and maintaining is convenient.