Hollow global tungsten carbide (WC) catalysts with meso-porosity were prepared by spray drying sphere miniaturation-gas-solid reaction, using ammonium metatungstate as precursors, carbon monoxide as deoxidizing gas and carbon dioxide as carrier gas. The samples were characterized by XRD, SEM, EDS and TG-DTA, respectively. XRD and EDS results show that the sample took pure WC phase, with a ratio of W/C near 1. TG-DTA results show that the sample is stable in the air under 400 ℃. SEM images indicate that the morphology of the sample is hollow globe with meso-porosity on the surface. The hollow globe was constituted by a lot of puncheons, with a length of 100～800 nm and a width of 50～150 nm. The joint between two puncheons lies on tips or tip and the surface of puncheon. Puncheons were surrounded by cavities. The cavity connects with each other, with different shapes and a size of 0～200 nm.

Key words: meso-porosity, hollow globe, tungsten carbide, characterization