The flexural strength and plastic shrinkage cracking resistance of aramid fiber cement mortar were studied.The test results show that with the increasing volume content of aramid fiber,the flexural strength and the effect of plastic shrinkage cracking resistance can be strengthened.When the fiber volume content is 1.5%,the flexural strength can be increased to 26.49% and the plastic shrinkage crack can be reduced to 24.95%.The mechanism of aramid fibers in improving mortar's mechanical performances is discu...