The invention provides a six-in-one prefabricated concrete outer wall panel and a production method thereof. The six-in-one prefabricated concrete outer wall panel comprises a hydrophobic self-cleaning coating layer, a flexible board, a crack-resistant mortar layer, a gridding cloth, a fireproof dry mixed mortar layer, a heat insulation board and a concrete board which are fixedly connected from outside to inside in sequence. Heat insulation nails are uniformly distributed on the heat insulation board, the end parts of one ends of the heat insulation nails are located in the heat insulation board, and the end parts of the other ends of the heat insulation nails are located in the concrete board. A plurality of strip-shaped through grooves with isosceles trapezoidal cross sections are formed in the lower surface of the heat insulation board, and the strip-shaped through grooves are arranged side by side and evenly distributed. Clamping blocks with isosceles trapezoidal cross sections are integrally arranged at the position, corresponding to the strip-shaped through grooves, on the upper surface of the concrete board, and the clamping blocks are embedded in the strip-shaped through grooves. The six-in-one prefabricated concrete outer wall panel adopts the closed design and has good fireproof performance; the strip-shaped through grooves and the heat insulation nails can increasethe bonding friction force between the heat insulation board and the concrete board after pouring concrete; and the six-in-one prefabricated concrete outer wall panel has the effects of load bearing,heat insulation, fireproof, waterproof, decoration and self cleaning.