The invention provides a dyeing-finishing method for plain weave fabrics. The dyeing-finishing method particularly comprises the steps of sequentially carrying out procedures of singeing, primary treatment, mercerization, whitening tentering, printing or dyeing, fixation, washing, pretreatment, post-treatment shaping and pre-shrinkage, wherein the primary treatment procedure is carried out in overflow equipment or cold stacking equipment; the pretreatment procedure is carried out in a loose dryer; and the mercerization procedure is carried out in an elastic rubber roll calender. According to the dyeing-finishing method, by utilizing overflow or loose processing equipment with relatively small tension, the problems that the external indexes of the finished fabrics are unqualified directly because a stitch slipping phenomenon is caused due to over-large stress in the longitudinal and latitudinal directions, the flower type outline is not clear and deforms after printing, the local colorshades of the fabrics are different are solved. Meanwhile, the fabrics are finished through the combination of a loose post-finishing manner and the elastic rubber roll calender, so that the finishingeffect is improved.