The dispute between labor and capital, the influential issue in the economic marketization process, is due to the inequilibrium between the protection mechanism for labors and the market flaxibility. The core is the imbalance of labor-capital negotiation power. Thus, it’s necessary to balance the negotiation power between labor and capital in order to solve the labor-capital conflict and harmonize the labor relationship. This article uses the “Negotiation Power” to analyze the factors influence labor relationship, to explore its change during the reformation process, and to put forward a multi-actor- cooperation institution system to harmonize labor relationship.