Abstract: In order to study the suitability of the jacquard spun laced nonwovens for the medical dressing, the moisture and diffusion mechanism of the jacquard and plain spun laced nonwovens were tested and analyzed. Following conclusions can be found according to the test results: Because of the granular pattern on the surface of the jacquard spun laced nonwovens, the bulk and the fullness are improved and the moisture and diffusion mechanism are both better than the plain spun laced nonwovens’. With the increasing of the viscose rayon content, the diffusion area percentage of the artificial blood on the sample will be bigger. Meanwhile the jacquard spun laced nonwovens is one kind of ideal select for the medical dressing when the fiber ratio is reasonable.