The invention provides a grouting material used for controlling high-speed railway ballastless track bed mud spillover and a technology thereof. The grouting material is prepared from dry raw materials and liquid raw materials, wherein the dry raw materials include a binding material component, an expansion component, an anti-dispersion component, an aggregate component, a toughening component anda condensation adjusting component; the liquid raw materials include a polymer emulsion, a water reducer, an anti-foaming agent, an air entraining agent and water; the mass ratio of the dry raw materials to the liquid raw materials is 100:(10-50). The grouting material is used for controlling the high-speed railway ballastless track bed mud spillover, and the grouting material has the advantagesthat the working performance is good, the grouting performance is good, the condensation time is controllable, the grouting material is not dispersed in case of water, the toughness is high, and the durability is high.