The invention relates to a dyeing and finishing technology of a rayon fabric. The dyeing and finishing technology comprises the following steps: dyeing and pre-treating a primary high-grade woven rayon fabric; carrying out antistatic and anti-crease finishing; carrying out dyestuff discharge printing on the steamed and sized primary high-grade woven rayon fabric and immersing into a dyeing solution, wherein the dyeing solution is prepared from 1ml/L of a dyeing agent and 1ml/L of a chelating agent; raising the temperature to 40 to 50 DEG C; steaming for 20 to 30min by utilizing a steaming machine with the steam pressure of 2kg to raise the temperature to 50 to 60 DEG C along a curve; carrying out heat preservation for 10min; then adding table salt and sodium carbonate, wherein the mass ofthe table salt is the same as that of the sodium carbonate and is 3 to 5g/L; then raising the temperature to 60 to 70 DEG C along the curve and carrying out the heat preservation for 10min; adding a color fixing agent and then carrying out post-treatment. According to the method provided by the invention, an obtained discharge printing dyed pattern has strong stereoscopic impression and a dyestuffis firm; the moisture-permeable and anti-ultraviolet effects reach satisfied degrees and the dyeing effect is good.