The utility model provides a staged fracturing device, and relates to the technical field of staged fracturing of horizontal wells. The staged fracturing device comprises a sealing rod and a ball headrod. A mounting hole is formed in one end surface of the sealing rod, and the ball head rod is inserted into the mounting hole; the sealing rod is divided into a plurality of sealing sections in theaxial direction of the sealing rod. The sealing section is provided with a liquid injection pipeline communicated with the outer surface of the sealing section; a liquid inlet pipeline and a pluralityof liquid distribution pipelines communicated with the liquid inlet pipeline are arranged on the ball head rod; and the plurality of liquid distribution pipelines can be communicated with the plurality of liquid injection pipelines in a one-to-one correspondence manner. The technical problems that in the prior art, the result of simulating staged fracturing through a fracturing device is not accurate, and disassembling and recycling are difficult are solved.