This paper explains the origin and concept of rural complex，modern agriculture demonstration garden industrial park，and rural industry integration development，analyzes the naming，basic situation，development and construction objectives of the three national parks in Huaihai Economic Zone，and puts forward that the rural complex should pay attention to the inheritance of culture，the environment of the characteristics of regional and reveal；The construction of modern agricultural industrial park should be based on the cultivation of leading industries，establishment of agricultural brands，construction of scientific research platforms and industrial complexes. The development orientation of demonstration parks for the integration of rural industries should be emphasized on the construction of the whole industrial chain，the multi-function polymerization，the construction and improvement of interest connection mechanism，and the monitoring，evaluation and demonstration effect.