[Objective] To analyze the change of stratum displacement and stress induced by fault dislocation and groundwater level change in the hanging wall and the foot wall of ground fissure in order to provide references for the further research in the formation mechanism of ground fissures.[Methods] Taking Gaoliying ground fissure in Beijing City as research background prototype, the relationship between the formation of ground fissure and fault tectonic activity, and the change of groundwater level were analyzed, based on the activity characteristics of the ground fissure. The change law of modeled stratum displacement and soil internal stress induced by these two inducing factors was studied using numerical simulation.[Results] Due to the fault dislocation, the settlement deformation on the hanging wall was greater than the foot wall, the curve of vertical displacement of surface showed an opposite "S" shape, and the range of the stress reduction zone of the hanging wall was larger than the range of the stress enhancement zone on the foot wall. Stratum settlement amount increased with the decline of groundwater level, and the stress curve was approximately "centrosymmetric".[Conclusion] The differences in settlement displacement and stress changes between the two sides of the fault were significant. The differential settlement was positively correlated to the descent of groundwater level, and the influence range of ground fissure induced by descent of groundwater level was 45 m on the hanging wall while 35 m on the foot wall. The research results can provide scientific theoretical basis for disaster prevention and mitigation in the ground fissure areas.