<p>Ecological environment improvements reduce the likelihood of geohazard to some extent. Studying synergy between the two is important for achieving geohazard prevention and mitigation. This study attempts to couple the ecological environment quality with the geohazard susceptibility, to identify ecologically influenced geohazard and analyze measures cost, using Xiuyan County as an example. A coupled coordination model based on geohazard susceptibility and ecological environment quality is established for 2017 and 2024, providing targeted guidance for ecological restoration and geohazard management from two perspectives. The results showed that in model comparisons, QI-CNN had advantages, with the highest areal geohazard density in moderate and high susceptibility areas. Elevation, distance from river, and aspect had significant effects on geohazard susceptibility. The area of high susceptibility area had been reduced by 14.86 km². The ecological environment quality had been improved, improving area on both sides of road. The synergy between geohazard susceptibility and ecological environment had increased, and the mutual constraint had become more evident. 8% of the geohazard were located around roads with an ecological environment rating of “Good” and “Excellent”, where engineering measures were still required. Geohazard in hot spot regions should be treated with ecological measures, saving about 0.15 million per point investment. Successful management of all geohazard will protect 30.98% of the study area. This paper reveals the spatial and temporal patterns of ecological environment quality and geohazard susceptibility, clarifies synergy mechanism between the two, and provides a theoretical basis for understanding ecological management measures in the context of geohazard.</p>