A solid neutral sizing agent, based on alkyl ketene dimmer was prepared. It can readily dispersed in warm water without the aid of a homogenizer. As a solid sizing agent, it is more convienient in storage and transportation than the commonly used AKD emulsions. The efficiency of solid neutral sizing agent is affected by pH of the stock, rate of addition, starch addition and use of curing accelerator. The test sheets were well-sized and show on feathering when stock pH was in the ranges from 6.5 to 7.5. In general, degree of sizing depends on the addition rate of sizing agent, when ink feathering property of sheet is determined by the amount of starch additions. Starch addition also has positive effects on the retention of calcium carbonate fillers. A cationic sizing accelerator is often used as well to control the curing rate of sizing agent. Handmade papersheets for Chinese painting purpose require durability and permanence. Treatment with a solid neutral sizing agent can meet the requirements satisfactorily.