The invention discloses an integrated doubly-fed wind generator carbon brush holder assembly comprising an assembly support rack, a number of integrated carbon brush assemblies and an earthing brush holder assembly, wherein the integrated carbon brush assemblies and the earthing brush holder assembly are fixed on the assembly support rack, the assembly support rack comprises a first bending plate and a second bending plate, two support rods are arranged between the first bending plate and the second bending plate, two ends of each integrated carbon brush assembly are fixed on the support rods, the earthing brush holder assembly is fixed on the second bending plate, the second bending plate is provided with a number of support stand feet, the integrated carbon brush assemblies comprise a one-piece carbon brush, and one end of the one-piece carbon brush contacts with a surface of an electrically conducting ring. According to the integrated doubly-fed wind generator carbon brush holder assembly, the integrated carbon brush is used for replacing a multi-carbon brush combination structure of the prior art, and a problem of uneven pressure is solved; incidence rates of faults such as high temperature, sparking, burn of the surface of the electrically conducting ring and the like can be lowered; a structure of the assembly support rack produces fixing effects, and electrical faults caused by vibration can be prevented in a working state.