Provided is a filter tuning system, and relates to the technical field of filter tuning; the system comprises a transfer robot and a tuning head, the transfer robot comprises an X conveying shaft, a Yconveying shaft and a Z conveying shaft, and the tuning head comprises a fixed disc, a mounting disc, a servo motor, a first gear, a rotating shaft, a limiting disc, a mounting hole, a second gear, afastener, a clamper, an extrusion tool, an extrusion head, a fastening head, a clamping head, a connecting rod, a connecting sleeve and a spring. According to the invention, the measuring equipment can measure electrical data of the filter, the depth needing to be extruded can be calculated, and movement of the extrusion tool in the X, Y and Z directions can be realized; the filter can be automatically and accurately extruded and tuned, the three parts are driven to move through one moving part, power equipment of the device can be reduced, and the size of the device can be reduced; elastic stretching and retracting of the fastener, the clamper and the extrusion tool can be achieved, and adverse effects caused by simultaneous lifting of the three parts can be avoided.