The paper established reinforced concrete finite element model so as to analyze engineering structural problems. Taking aqueduct reinforced concrete model as an example,it used ANSYS coupling and constraint equations method in process of setting up model.The method considered stress-strain produced by method for temperature and stress fields coupling.The constraint equation method is used to link steel and concrete nodes with constraint equation.The result comparison of pure concrete structure and reinforced concrete structures contrast showed that the reinforced concrete finite element model can simulate the actual reinforced concrete model and can provide a reliable theoretical basis for engineering safety monitoring.