Collection development policies(CDP) are becoming increasingly important to libraries of all types and sizes. The paper addresses the elements to develop a collection development policy to guide the librarians for the science and technology information resources. Instead of focusing on how well a given item fits into or supports the collection, the policy gives general guidance on the selection of information resources. The general collection development guidelines for the information resources include relevance and potential use of the information, demand for the information, ease of use of the product, subject and magnitudes, stability of the coverage of the resource, longevity of the information and evaluation mechanism.