在素质教育推进下，小学美术色彩教学价值凸显，但当前单课时、碎片化教学模式限制了学生发展。大单元教学强 调知识整体性与关联性，可解决此问题。文章指出小学美术大单元色彩教学面临教学内容碎片化、目标模糊化、情境单一化、 实践浅层化、评价单一化等现实困境，提出应遵循统一性与多样性、理论与实践、整体性与阶段性、跨学科融合与多元发展 相结合等原则，并从构建主题单元、明确教学目标、创设教学情境等方面给出教学策略，以提升教学质量，培养学生综合素养。

with the promotion of quality education, the value of primary school art color teaching is prominent, but the current single class hour and fragmented teaching mode limits the development of students. Large unit teaching emphasizes the integrity and relevance of knowledge, which can solve this problem. This paper points out that the color teaching of primary school fine arts large unit is faced with realistic difficulties such as the fragmentation of teaching content, the fuzziness of teaching objectives, the simplification of situation, the shallowness of practice, and the simplification of evaluation. It puts forward that the principles of unity and diversity, theory and Practice, integrity and stage, interdisciplinary integration and diversified development should be followed, and teaching strategies should be given from the construction of theme units, the clarification of teaching objectives, and the creation of teaching situations, so as to improve the teaching quality and cultivate students' comprehensive quality.