The invention discloses an impedance adjustable millimeter wave bent type radio-frequency coaxial connector. The product adopts an impedance adjustable structure, the structure is reliable, the electric performance is excellent, and the requirement of millimeter wave wide band is met. The product comprises an inner conductor, an insulator, a first bush, a second bush, a first shell, a second shell, a third shell, a snap ring, a swivel nut and an adjusting screw component. The product adopts the impedance adjustable structure, and adjusting screw holes are formed in the first shell 5. The product adopts a split structure of the first shell, the second shell and the third shell, and is reliable in connection and flexible to use. The inner conductor adopts an integral structure, and excellent voltage standing wave ratio of the product is realized. One notch or two notches and an oblique angle are milled on the first shell so as to realize the purpose that the product can be loaded in the inner conductor.