Abstract: The teaching of introduction to environmental protection faces challenges such as monotonous teaching methods and a disconnect between theory and practice. Which making it difficult to meet the demand for cultivating comprehensive talents with ecological thinking and practical abilities. Guided by the Outcome-Based Education (OBE) concept and integrated with the problem chain teaching method, our research systematically designs a teaching reform initiative from four dimensions: modular restructuring of teaching content, guided teaching through problem chains, optimization of assessment methods with a competency orientation, and organic integration of concept of ecological responsibility. By reconstructing a three-dimensional teaching content framework of“foundation-advanced-expansion”, innovatively applying the problem chain teaching method, implementing a diversified assessment system that emphasizes both competency and process, and incorporating elements such as ecological civilization and scientific ethics. Thus, the reform effectively enhances students'comprehensive abilities. Practice has shown that this reform initiative effectively improves teaching quality and students'comprehensive competencies, providing a reference for the reform of environmental courses.

Key words: OBE concept, Problem chain teaching method, Introduction to environmental protection, Animals and environment, Pedagogical reform, Systematic thinking