Cao Feidian Tangshan Industrial District is now being seriously exploited, the stabilization of the generous mud on the surface is the preliminary thorny problem. Reaches indicate that the chemical stabilization is an effective method. By library tests, the preferable prescription of cement, Na
2SO
4 and Na
2SiF
6 is obtained, and the anti-pressure has been checked. Result shows that this prescription is superior, and could provide scientific guide for the construction.