A thin flat plate heat pipe (TFPHP) with a new structure of wick is fabricated and tested. The wick is formed by the narrow foils folded, the liquid passage and capillary force is provided by the folded clearance of the foils, the vapor passage is shaped by the periodic holes of the foils. One aluminum TFPHP of 260×60×4 mm3 size is made and the test setup is established. The test results show that the spreader has good performance as, at the horizontal state, the power transferred can reach 18.5W, the corresponding thermal conductivity is 838W/(m·°C). For different tilt angle, we have the performance results. The effects of parameters to the performance are discussed. The spreader is significant for the spreading of point power.

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