The invention relates to a method for directly making a hollow blade ceramic mold based on a photo-curing process. The method is as follows: firstly, ceramic powder and pre-mix liquid are evenly mixed so as to make ceramic slurry; secondly, according to a hollow blade model, a hollow blade mold model containing a gating system is obtained, and the ceramic slurry is directly made into a ceramic mold biscuit on a photo-curing forming machine according to the hollow blade mold model; then, the ceramic mold biscuit is dewatered to obtain a dry ceramic mold; finally, the dry ceramic mold is placedin a high-temperature baking furnace so as to carry out degreasing and sintering, thereby making the hollow blade ceramic mold. The ceramic mold can be used in the casting of a hollow blade, and replaces a multi-layer ceramic shell and core manufacturing process adopted in the prior investment casting. The method does not need the processes of investment pattern making, slurry coating and sand spreading adopted in the prior process, and has the characteristics of simple process, short cycle, low cost and quick returns, etc.