The invention discloses a novel valve body casting process. The novel valve body casting process comprises a lower die sleeve and connecting blocks, wherein a sand core is arranged in the lower die sleeve, connecting seats are arranged on the left side and the right side of the lower mold sleeve, a lifting handles are connected to the outside of the connecting seats, connecting bolts are arrangedin the connecting blocks, the connecting blocks are located at the upper end of the lower die sleeve, connecting nuts are fixed to the left end of the connecting bolts, a connecting groove is formed in the upper end of the connecting block, a middle die sleeve is arranged above the connecting groove, an upper die sleeve is arranged above the middle die sleeve, and a mold cover is arranged above the mold main body. Compared with an existing common valve body casting process, the novel valve body casting process has the advantages that the operation process is more rapid and convenient, the structure is small, the manufacturing process is simple, excessive maintenance cost is not needed, the internal structure is complex and is formed by splicing a plurality of sand cores, the structure is not easy to deform in a high-temperature state, the internal size can be well controlled, and the size precision is relatively high.