The effects of 75μm wollastonite microfibers on the workability, mechanical properties and shrinkage properties of cementitious composites were studied by mechanical and shrinkage tests. The results show that the addition of microfiber reduces the fluidity of fresh mixture, but appropriate content can still meet the needs of self-compaction. WF has no gain effect on the compressive strength of the mixture, but when the dosage is 20%~30%, the flexural strength and tensile strength can be significantly increased by 87% and 28%. The shrinkage test indicates that WF has a good inhibiting effect on shrinkage deformation. It can be used as a good mineral admixture in ECC.

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