Vocational education serves as the main platform for cultivating skilled talents, and the quality of teaching staff directly determines school-running standards and education efficiency. The tree-shaped ecological model follows the logic of “root foundation building, trunk core strengthening, luxuriant branches and leaves, soil empowerment”, which matches the construction requirements of dual-qualified teachers in higher vocational colleges. At present, higher vocational teaching staff are confronted with dilemmas including weak ecological foundations, insufficient core competencies, unbalanced staff structure and restricted development environment. Based on this model, this paper explores high-quality ecological development paths for teaching staff from four dimensions: consolidating the root system of teacher recruitment and training, forging the trunk of dual-competency teachers, constructing multi-collaborative branches and leaves, and optimizing the soil of institutional guarantee.