The invention relates to a 3D contact lens printing method which comprises the following steps: S1, establishing a personal eyeball model of a wearer by using a 3D data scanner; S2, performing 3D modeling on eyeball model data in the step S1 by using a computer; S3, setting the printing conditions and requirements; S4, establishing connection between the computer and a printer; S5, preparing printing materials, and adding the printing materials and a photoinitiator into the 3D printer; S6, controlling preparation of contact lenses by using the 3D printer; S7, performing freeze molding, namely immediately performing cold trap freeze molding on a printed cured product; and S8, performing subsequent treatment, namely polishing the surface of the molded contact lens product, grinding and deburring. The method disclosed by the invention has the advantages that the contact lenses suitable for each person can be personalized, and multiple conditions such as degree of myopia, astigmatism degree, and radian, hardness, toughness, wettability and transparency of the lenses can be customized according to the requirements.