The present invention provides a small-volume low-intermodulation RF connector. A male outer conductor is connected on a female outer conductor through a screw sleeve, the front end face of the male outer conductor is in conductive contact with a step on the inner hole of the female outer conductor to form a first conductive contact surface; a fixing section at the rear section of an elastic contact piece is inlaid in the male outer conductor, the elastic portion of the front section is extended to the outer portion of the male outer conductor to be in contact with the inner side circular conical surface of the female outer conductor to form a second conductive contact surface; radial and axial conductive contact surfaces achieve the intermodulation structure, the volume is small, the weight is light, the installation is fast, the connection operation is convenient, the coaxiality is good, the contact pressure of the inner and outer conductor interfaces are high, the reflection factorand the insertion loss are small, the crosstalk distortion is low, the anti-impact vibration performance is good, the outer conductor contact interface is reliable in seal, high in power and high in frequency band, and can be suitable for low-intermodulation requirements of 5G communication; and moreover, the raw material consumption of the copper conductor is reduced, the cost is reduced, and theintegration effect is good.