In order to solve the waste steel slag problems such as environmental pollution，occupied many places， the use of steel slag in weight of steel slag concrete not only can re-duce the negative social issues， waste steel slag on the pipe rack structure， also has signifi-cant economic and social benefits.In this paper， relying on the fu ping county utility tunnel engineering， through the indoor experiment and the simulation analysis， structure of differ-ent mixture ratio of steel slag concrete performance monitoring analysis and simulate the u-tility tunnel deformation characteristics and displacement size.Results show that the steel slag concrete mixture ratio design， best water-binder ratio 32.7%， sand ratio 33.3%， fine aggregate of 30%to 35%.Comparative analyses on pipe rack， blending， steel slag， the bot-tom of the beam under bending moment was 4.571kN·m， not mixed with steel slag， the bottom of the beam under bending moment was 34.125kN·m， mixed with steel slag is the 8.5 times of the moment when weight concrete.A comparison analysis of utility tunnel engi-neering deformation， when mixed with steel slag， the biggest displacement at the bottom of the pipe rack beam is 10.858mm， not mixed with steel slag， the biggest displacement at the bottom of the pipe rack beam is 110.921mm， both differ ten times.Pipe rack weight concrete mixed with steel slag can not only reduce pipe gallery on the bending moment， but also can effectively decrease the vertical deformation of the pipe gallery， is of great signifi-cance in improving the utility tunnel structural stability.