Abstract: In the context of urban renewal， heritage conservation in old industrial areas tends towards formalization in a collage style， while ecological restoration often contradicts historical preservation， and the synergy between functional repair and cultural collage remains insufficient. This paper focuses on collage city theory and the practice paradigm of “urban renewal and ecological restoration”. Through empirical analysis of a case study， it explores the synergy mechanism between these two approaches in the heritage renewal of old industrial areas， and constructs an integrated path of “layer restoration” from the ecological， functional， and cultural dimensions. This study shows that the collage strategy can effectively enhance the explicit expression of historical layers， while the “urban renewal and ecological restoration” path provides institutional support for systematic governance. The three dimensions support each other， avoiding the limitations of monolithic renovation. Finally， based on an analysis of the current situation of the West Industrial Area of the 8th Division of the Xinjiang Production and Construction Corps， this path is applied to optimize the renewal and sustainable development of industrial heritage culture， thereby providing a reference for the heritage renewal of old industrial areas.