Promoting the two-way interaction between high quality agricultural development and agricultural science and technology innovation ability is the only way to realize their coordinated development.Using entropy method and coupling coordination model, the coupling coordination level of agricultural high-quality development and agricultural science and technology innovation ability in Heilongjiang Province in 2018 was studied.The results show that the coupling degree between the high quality development of agriculture and the innovation ability of agricultural science and technology in the whole province is good but on the brink of imbalance stage. The development level of the innovation ability of agricultural science and technology lags behind obviously, and the two systems are in a false coupling state.From the perspective of cities, the comprehensive development level, coupling degree and coordinated development degree of high quality agricultural development and agricultural science and technology innovation ability of cities showed a spatial distribution pattern of "high in the southwest and low in the northeast".Therefore, it is suggested that Heilongjiang Province should further recognize the essence of high-quality agricultural development, coordinate the geographical distribution of agricultural science and technology innovation, identify the entry point of integrated development of agricultural industry, and strengthen agricultural science and technology innovation.