This research explores the main conditions of achieving a high-degree cooperation in the planning of utilizing the existing idle resources. It aims to understand the combined effect of general cooperative development modes (CDM), effectivity of the integration of multi-planning (IOMP) application and building of trust in collaboration to reach a harmony by adopting a qualitative method of case study analysis. It collects primary data from interviews and secondary data from government websites and official documents and visual information from some participants. This research unveils the main reasons behind farmers’ willingness of cooperation and the mutual supports between the enterprise and local government in terms of the achievability of consistent purposes, land adjustments and unity of the planning system. It extends the practicability of IOMP in promoting cooperation. Also, this study highlights the significance of trust by indicating the building of consensus and assessing the trust indicators in collaborative planning and governance to promote the cooperative relationship. This study implies the comprehensiveness of making a high degree of cooperation and even harmony in relevant development project in terms of interest, planning system and the psychological contract. It also desires further studies on more detailed analysis with different scales.