Safe handling spraying device, which comprises a reservoir where is assembled an actuating lever or, manually or automatically actuating air pumps, that perform the internal reservoir pressurization. Inside of it, there is a pressure chamber where is stored water and the Chemical Concentrated product that is inside a pliable tightly closed bag. The reservoir (10) is designed for supplying water (Ag), the chemical concentrated product (CCP) is stored separately in a pliable container (12). The pliable container (12) is disposed inside of a pressure chamber or water reservoir (10), so that the same pressure defined inside the reservoir (10) is applied to the pliable container (12) simultaneously. The output end of the pliable container (12) is connected to the inlet of a mixing device (20) which doses the CCP continuously. After the CCP had been mixed with water, it communicates with a hose provided with an actuating trigger (30) and spraying nozzle (27) at the free end.