Due to the reduced dimensions of electronic equipment and the need for thermal management of these equipments, In order to increase efficiency and longevity of component, heat sinks with micro aspects are very important. In this study, heat transfer of micro heat pipe has been studied experimentally. For this purpose, firstly the micro heat pipe that is suitable for industrial conditions and restrictions for the production of very small size triangular section was designed and built. According to the very small size of the primary copper tube, the manufacturing process requires precision and advanced technology. In such a way, at first the samples of fine copper tube available in the market was provided and during the process of heat and tension was brought, at the same time, to the desired thickness and diameter and then by using provided wedge the appropriate cross section is achieved. To apply thermal load, a set of various thermal flux was applied to the evaporator and temperature distribution achieved via five thermocouples which were installed on the body in accordance with the set-up and heat resistance was measured. Water and different solution mixture of water and ethanol were used to investigate effect of the electric double layer heat transfer. It was noticed that the electric double layer of ionized fluid has caused reduction of heat transfer.