The objective of this article was to study the influence rules of recycled cellulose fibers (RCFs) on the early cracking and the self-shrinkage of cement mortar under the sealed curing. Compared with UF500 cellulose fibers and the short polypropylene fibers (PP), the properties of mortar with fibers mixed at 1% or 2% by mass of cement, such as the strength, the sF/sC and the auto-shrinkage strains, etc., were analyzed. The results showed that the crack-resistance and self-shrinkage of cement mortar at 0.3 water-cement ratio could not be improved by adding RCFs. When a water-cement ratio was higher than 0.35, the sF/sC of mortar increased by adding 1% RCFs although it decreased the flexural strength and the compressive strength. Then under the quantity, the crack-resistance and shrinkage-reducing effect of cement mortar were enforced, too. Though the impact of RCFs on the crack-resistance and self-shrinkage of mortar was lower than UF500 and PP, RCFs has advantage as an internal curing agent considering the strength and economic cost.