The invention discloses a rapid dual-way material paving full-color 3D printing machine. The rapid dual-way material paving full-color 3D printing machine comprises a shell, a control platform and a material paving mechanism; printing assemblies are arranged on the two sides of the material paving mechanism, and adopt photocuring full-color inkjet print heads, UV photocuring lamp tubes are arranged on the two sides of the bottoms of the photocuring full-color inkjet print heads, material boxes are arranged on the two ends of the shell, quantitative discharging devices are arranged at the lowerends of the material boxes, a forming cylinder body is arranged in the shell, the forming cylinder body can slide along guide rails on the two sides of the bottom in the shell, a forming cylinder upper rend powder bed is arranged on the top of the forming cylinder body, a discharging opening is formed in one end of the shell, and a sand removal device is arranged on the outer side of the discharging opening. Dual-way material paving of a material paving mechanism is achieved, in the back and forth process of the material paving mechanism, the dwell time is short, the work efficiency is greatly improved, sand removal and material taking are integrated, the automation degree is high, manpower and time are greatly saved, the sand removal efficiency is improved, the raw material use rate is high, and cost is greatly saved.