[Objective] To carry out construction land suitability evaluation and optimize the evaluation partition scheme, supplying a good reference for promoting suitability evaluation and spatial allocation of construction land.[Methods] A scientific construction land suitability evaluation index system was built to confirm the suitability of grading for potential construction land space. Construction land regulation regions were confirmed alternatively based on different combinations of suitability grades. After that, landscape ecological quality was modeled for selecting the alternative schemes.[Results] The results of construction land suitability evaluation were six-level suitability grade zones, and their area were 6.03, 13.83, 27.75, 45.66, 168.24, 108.05 km². Scheme 1 of suitability zones had higher landscape ecological quality, cond was preferred scheme.[Conclusion] Confirming construction land regulation regions based on suitability grades is an effect way to get lower disturbance degree and improve stability degree. In this case, the comprehensive landscape ecological quality index is higher. After comprehensive contrast, scheme 1 has high landscape ecological quality. Because in this scheme, urban-rural construction land allocation is more reasonable, and it will help to increase the steady of landscape ecosystem.