Abstract: Reciprocity preference is one of basic assumption of behavior economics; it brings on a strong challenge to the rational economic person assumption of traditional economics; it not only initiates the development of modern economic theory, but also has a great impact on the construction of corporation civilization construction. The management activity of small and middle private corporations includes obvious reciprocity features and improves the enterprise operational performance to some extent. The empirical research reveals the micro path mechanism of reciprocity culture in the process of corporation performance improvement for small and middle private corporations, which might provide the actual theory lesson for the small and middle private corporations to strengthen reciprocity management tactics and to actively reconstruct psychological contract, therefore to raise the operational performance of the enterprises.

Key words: reciprocity preference, psychological contract, employee professional dedication, corporation performance, structure equation model