The invention relates to a textile printing and dyeing process, and especially relates to a nylon camouflage fabric preparation process. The process comprises the steps of original cloth stitching, pretreatment, styling, bottom dyeing, printing, baking, steaming, post-finish tentering, and inspecting. The formula of the printing material is that: every 100kg of a colorant comprises 0.6-1.8kg of a dispersing material, 0.01-5.0kg of an acidic material, and 0.02-0.5kg of paint. In the baking step, a moving speed is 35+/1m/min, and a temperature is 165-170 DEG C. in the steaming step, the moving speed is 10+/1m/min, the temperature is 101-105 DEG C, and the time is 30min. In the post-finish step, different auxiliary agents are used, such that waterproof, air-permeating, oil-repelling, and antistatic functions are made compatible. The process has the advantages of short production process, good color phase consistency, good color fastness, bright color, and low cost. The method mainly adopts environment-friendly dyes, and is especially suitable for high-grade products in anti-infrared camouflage product fabrics.