In this study, the drying of porous sample, i.e., wood with microwave energy by a combined hot air and microwave continuous belt drier is investigated. The microwave power is generated by means of 12 compressed air-cooled magnetrons of 800W each for a maximum of 9.6 kW. The power setting could be adjusted individually in 800W steps. Most importantly, it focuses on the investigation of drying phenomena under microwave environment. In this analysis, the effect of the irradiation time, sample sizes, microwave feed position and microwave power level on overall drying kinetics and sample quality are studied in details. The human safety during working with microwave heating processing is also investigated in details. The results presented here provide a basis for fundamental understanding of microwave-heating of various kinds of dielectric materials. Moreover, this work depicts the technique that combined the conventional heating with the microwave heating and the continuous belt system together. It shows the potential and the efficient to reduce the electrical energy consumption. If this technology is implemented to the industry, it will decrease the production costs due to the lower electrical energy consumption. In overall, when handling a combined unsymmetrical multi-feed microwave and hot air-continuous belt system correctly, we can conclude that it will realize the following advantages over other drying systems. (1) Better heat distribution, (2) Faster product heating because the multiple magnetrons are placed around the rectangular cavity; this advantage corresponds to the better microwave power distribution, with can penetrate further into the multi-plane of material, (3) Immediately ready for operation and control of heat capacity without delay, (4) Continuously supply the parawood pake into the system and the distribution of microwave in the cavity as well, (5) The cavity is design to prevent magnetron damage, and the distribution of microwave in the cavity as well (6) No heat storage losses, (7) Low specific energy consumption and high energy efficiency. Further quantitative validation of experimental data could be very useful, especially in providing information for processing high performance microwave drying for developing the wood industries in Thailand.