We propose a method named as full control of light to generate arbitrary vector beams by modulating all the parameters of the spatial distributions of an optical field. Two reflective phase-only liquid crystal spatial light modulators can be used to modulate all the parameters of light including the phase, amplitude and polarization (polarized rotation and ellipticity). Theoretically, we provide the Jones matrix of full control of light. Then the grayscale that is loaded on the spatial light modulator can be calculated according to the designed vectorial optical field. Experimentally, different vector beams containing amplitude and/or polarization modulations are successfully generated and tested using polarization measurement to verify the feasibility of this method of full control of light.