A honing fixture for conducting automatic fine honing machining on a thin-walled air cylinder sleeve is disclosed. The honing fixture comprises a fixture main body, the fixture main body is connectedwith a power device driving the fixture main body to act, and the power device is in control connection with a switch sensor module used for detecting the action position of the fixture main body. Thefixture main body comprises a fixture bottom plate and a positioning sleeve matched with the fixture bottom plate and used for fixing the thin-walled air cylinder sleeve, the positioning sleeve is fixed to the power device through a connection sleeve, and a honing head guiding sleeve located above the connection sleeve and coaxially arranged with the positioning sleeve is fixed to the power device as well. The switch sensor module at least comprises a clamping signal switch, a fixture in-place switch, a fixture guide-in switch and a hydrosphere upper switch. The fine honing fixture for the thin-walled air cylinder sleeve can adapt to automation line production, a machined product is small in deformation, and the fine honing fixture is high in precision. The fixture main body, the switch sensor module and the power device are subjected to optimized designing, the structure is coordinating and compact, the fine honing fixture can be controlled efficiently and conveniently, and the service life of the fixture is long.