The present invention discloses a blind mating and floating RF connector assembly with low intermodulation, comprising a first connecting device and a second connecting device, wherein the first connecting device comprises a first guide portion and the second connecting device comprises a second guide portion adapted for mating with the first guide portion, wherein the first connecting device has a slotted configuration and is provided, at an end, with a boss projecting radially outwards and the second connecting device is provided with a corresponding inner engaging groove being capable of radially abutting the boss, wherein the second connecting device comprises a fixed mount unit and a floating unit, the floating unit being capable of moving radially and axially relative to the fixed mount unit, in such a way that a plurality of pairs of the first connecting device and the second connecting device can be quickly connected simultaneously via a quick blind mating operation when the first connecting device and the second connecting device are brought together, without necessarily making the first connecting device and the second connecting device be axially aligned precisely with each other. The present invention allows relative floating of connecting devices of a plurality of pairs of low-intermodulation RF connectors, allows simultaneous quick blind mating connection, and improves connecting efficiency and installation reliability.