Private science and technology park, which takes an important role on transformation and upgrade, is the backbone and key carrier to impel private economy, upgrade the competitive strength and independent innovation capability of private economy. This assay, integrating theory with practice, analyzes the establishment, structure, opportunities and challenges of "Three kind of Capital Integration Model". This assay also puts forward the thoughts and suggestion on integrating different kinds of capital to private science and technology park and pushing forward the development of private science and technology park by promoting the application of "Three kind of Capital Integration Model". <<