Production process of chrome-free tanning and vegetable-free tanning sofa leather

The invention provides a production process of chrome-free tanning and vegetable-free tanning sofa leather, and relates to the technical field of leather production and preparation. The production process of the chrome-free tanning and vegetable-free tanning sofa leather comprises the following specific production processes: step 1, firstly, carrying out pre-soaking to remove impurities such as dirt on the surface of raw leather, then, carrying out main soaking, and adding a rewetting bactericide, an enzyme soaking agent and an emulsification degreasing agent during main soaking; 2, sodium hydrosulfide, a liming auxiliary agent and lime are added into water, the surface of the raw leather is rubbed to achieve unhairing, then sodium sulfide, lime and an emulsification degreasing agent are added, the lime evenly permeates, the leather body swells moderately, and grease on the surface of the raw leather is emulsified and removed. The leather fibers are tightly fixed, short in pile, flat in grain surface and pure