With the in-depth development of globalization, cross-border cooperation between China and Russia has gradually strengthened, especially in the field of industrial docking and complementarity between the two countries, which has shown great potential and significant benefits.This research takes cross-border cooperation between China and Russia as the research object. Through empirical analysis and in-depth interviews, it investigates the current situation of industrial development between China and Russia and the problems in the process of cooperation.The research focuses on the main cooperative industries of the two countries-energy, agriculture, and high-tech. It also collects production data and cooperation cases of related cross-border enterprises, and systematically analyzes the convergence of the industrial chains of China and Russia and the specific performance of the complementary industries of the two sides.The study found that cross-border cooperation between China and Russia plays an important role in promoting regional economic development, especially in economic activities and employment issues in border areas.However, there are also many adaptations and mismatches in the cooperation process, such as challenges in the investment environment, trade facilitation, and the docking of industrial standards.In order to meet the above challenges, this research proposes a series of strategies and measures to optimize cross-border cooperation, including but not limited to strengthening policy communication, improving the legal and regulatory framework, promoting trade facilitation, and improving the integration of the industrial chain. It aims to provide theoretical support and policy suggestions for the two countries to strengthen cooperation and achieve complementary development.