On the basis of preparing the microcapsule whose phase transition temperature just keeps 2～10 ℃ within the range of temperature-controlled packaging, the work aims to discuss the effects of ratio of core to wall, amount of emulsifier, homogeneous rate and NaCl on the properties and morphologies of the microcapsules by orthogonal test. The binary composite core microencapsulated phase change material was prepared by in-situ polymerization with binary combination phase change material dodecanol/decanol as the core materials, urea and methyl aldehyde as the raw material for the wall with melamine as the modifier. The properties of the products were analyzed and characterized by SEM, DSC, TGA and FT-IR. Experimental results showed that the influence to the phase change temperature of microcapsulethe was the homogeneous rate > the ratio of core > the amount of emulsifier, and the influence to the cladding rate of microcapsulethe was the amount of emulsifier > the ratio of core > the homogeneous rate. The latent heat of microcapsules was improved greatly by adding NaCl, which made microcapsules encapsulation efficiency increased from 67.41 % to 89.76%. The addition of NaCl could improve the performance of the wall, making the microcapsules stronger and improving the cladding ratio of core materials. The surface of phase change microcapsules was more smooth and the particle size was more uniform, but agglomeration phenomenon was more obvious with the addition of NaCl. In conclusion, microcapsules meeting temperature-controlled packaging requirements can be prepared with raw materials that are cheap and easy to get. Different effects of influential factors on the properties and morphologies of the microcapsules are discussed.