If the slot length of the RF coaxial connector is too long, the contact force between the inner conductor of the pin and the inner conductor of the jack will become smaller, which may result in poor contact between the inner conductors; If it is too short, the contact between the pin and the socket will increase the wear of the inner conductor due to the contact force and the insertion force, and even the inner conductor or the medium support may be deformed or damaged, and the fatigue strength of the jack portion may also be lowered. The life of the connector will be shortened. Appropriately increasing the width of the slot can increase the contact force between the jack and the pin, but as the slot width increases, the contact area between the jack and the pin decreases on the circumference, which exacerbates the discontinuity of the transmission line and affects Electrical performance. In addition, the number of slots will also affect the use. Reasonable design of the inner conductor slot length, slot width and number of slots in the jack, when the slot on the jack is processed, the burrs in the jack are removed in time.