The invention belongs to the technical field of electro-hydraulic servo valves, and particularly relates to a novel spool structure. The technical scheme includes that the novel spool structure comprises a shell (4), a spool (1), a cylindrical feedback rod (2) and clamping screws (3), wherein the shell (4) is provided with axial communicated through holes and a radial hole communicated with the axial through holes, the spool (1) which is a tubular structure with protruding rings uniformly distributed on the outer portion is mounted in the through holes of the shell (4), a radial through hole is reserved at the center of the spool (1), the cylindrical feedback rod (2) is inserted into the radial through hole of the spool (1) from the radial hole in the middle of the shell (4), the two clamping screws (3) are screwed from two ends of the spool (1) and clamp the feedback rod (2), both left end face and right end face of the spool (1) can move leftwards and rightwards under the action of pre-stage differential pressure and drive the feedback rod (2) to move at the same time, so that position of the spool (1) can be fed back by the feedback rod (2). By the aid of the novel spool structure, stress caused by match grinding of small balls and knocking of pre-stage screws of the feedback rod can be avoided, and power-stage and pre-stage feedback functions can be realized conveniently and reliably.