Abstract: Microencapsulated paraffin and paraffin phase change composite materials have found wide application in many fields.The performance and characters of paraffin phase change microcapsules and paraffin phase change composite materials, such as high latent heat of phase change and the thermostability, were introduced.The progresses in preparation methods of microencapsulated paraffin in recent years, such as in situ polymerization or interfacial polymerization ect, were reviewed.The application of microencapsulated paraffin phase change materials and paraffin phase change composite materials was also summarized.