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This invention discloses a small-diameter motor-driven dual-mode intelligent honing tool integrated into a machining center, along with its operation method and application, belonging to the field of precision machining. The honing tool includes a tool body, a honing stone assembly, a motor-driven feed mechanism, a conductive slip ring, a protective cover, and a motor control system. The motor-driven feed mechanism is integrated within the tool body, driving the axial movement of the pusher rod through a reduction gearbox and a lead screw pair, and using the conical surface to drive the radial expansion and contraction of the honing stone. The motor control system employs dual-mode intelligent control: quantitative rough honing based on encoder position feedback, and constant-pressure fine honing based on a motor current-honing force model, thus achieving precise closed-loop control of the honing process. The conductive slip ring ensures power supply for rotation, and the protective cover provides anti-rotation and sealing. This honing tool can complete drilling, reaming, and honing composite machining in a single setup, solving the problems of low pressure control accuracy and slow response of traditional hydraulic tools, and is particularly suitable for ultra-high precision parts such as electro-hydraulic servo valve sleeves.