The invention discloses a leather surface printing process. The leather surface printing process comprises the following steps: spraying a layer of surfactant in a printing area of leather, spraying evenly, putting the leather under the condition of 45-50 DEG C, rapidly putting the processed leather on a printing device at the real-time temperature of 40-50 DEG C, spraying a color paste in the printing area, drying the surface of the printing area through a drying mechanism, coating a color fading agent in a non-printing area on the surface, removing the color paste in the non-printing area, spraying a color fixing agent in the printing area again, spraying evenly, drying under the environment of 45-50 DEG C, cleaning again after the color fixing agent is fixed, removing an impurity on thesurface while processing, and obtaining the surface printed leather. The leather surface printing process meets requirements of different people, the leather in the printing area is processed again,and the leather is prevented from being damaged.