Grouting system and grouting method thereof

The embodiment of the invention provides a grouting system and a grouting method thereof. A grouting pump is connected to a three-way valve through a quick-to-change device, the three-way valve is connected to slurry supply equipment through a quick-to-change device, a grouting parameter monitoring unit is connected to the three-way valve through a quick-to-change device,, and the grouting parameter monitoring unit is connected to a grouting hole tube through a quick-to-change device. The grouting system can improve pipeline dismounting efficiency of an equipment room, shortens a constructionperiod and reduces cost. The grouting parameter monitoring unit can monitor grouting parameters between the three-way valve and the grouting hole tube, and a duct piece deformation monitoring unit canmonitor deformation amount of duct pieces of a tunnel, and therefore, targeted grouting can be achieved according to monitored grouting parameters and monitored duct piece deformation amount, duct piece damages in a grouting