The invention provides a spraying device for paint without organic solvents, and belongs to the field of spraying. The spraying device comprises a spraying chamber, a spraying mechanism, a control mechanism, a drying chamber and a conveying mechanism; a part feeding opening is formed in one side of the spraying device, the spraying chamber is arc and is arranged in the center of the interior of the spraying device, and an opening is formed in one side of the spraying chamber and formed in the side where parts advance along the part feeding opening; the spraying mechanism is arranged in the center of the interior of the spraying chamber, an arc channel is formed between the spraying mechanism and the spraying chamber, the drying chamber is located between the spraying chamber and a main body of the spraying device, and the drying chamber is communicated with the part feeding opening; and the control mechanism is located on the exterior of the main body of the spraying device, and the spraying mechanism and the conveying mechanism are both electrically connected with the control mechanism. The spraying device is good in leakproofness, the rate of volatilization of gas in the spraying device is reduced, and the spraying and drying efficiency is high.