Dyeing process of polyester fabric

The invention relates to the technical field of textile processing, and particularly discloses a dyeing process of a polyester fabric. The dyeing process of the polyester fabric comprises the following steps that S1, pretreatment is carried out; S2, primary antibacterial treatment is carried out, and a primary antibacterial treatment solution is prepared; S3, secondary antibacterial treatment is carried out, and a secondary antibacterial treatment solution is prepared; and S4, post-treatment is carried out. The primary antibacterial treatment solution in the step S2 is prepared from the following raw materials in parts by mass: 20-30 parts of an antibacterial finishing agent A, 10-20 parts of a slow release agent and 50-60 parts of deionized water. The secondary antibacterial treatment solution in the step S3 is prepared from the following raw materials in parts by mass: 20-30 parts of an antibacterial finishing agent B, 4-8 parts of a cross-linking agent, 10-20 parts of a slow releaseagent and 50-60 parts of