This paper presents development of conceptual design model of DMFC for a portable application. The target power for the design is 0.4 watt per single cell, with 4 cm2 active area. The current density and fuel cell voltage were fixed to 0.175 A/cm2 and 0.57 V respectively. In order to develop new design, mass and heat transport will be analysed to get a better performance in the system. The new design will be applied to the portable applications such as cellphone, laptops and etc.