In order to evaluate the long-term safety status of the slope under artificial excavation conditions, a trench slope is taken as an example; the qualitative analysis is carried out by combining the lithology, geological structure, hydrogeological conditions and goaf characteristics of the stratigraphy. Based on the existing data and field survey data, a two-dimensional finite element method geomechanical model is established. The stability evolution of two typical profiles in the failure mode of double sliding surface are set as shape is simulated, and their differences are compared; and other software are supplemented to check the stability of the slope. The results show that the stability coefficients of the two profiles do not reach the safety limit of 1.25. The results can provide a theoretical basis and engineering reference for the excavation design and disaster prevention and control of trench slopes under similar engineering geological conditions.