A radio frequency ablation device, comprising a radio :frequency ablation tube (10), a control handle (20) and a tem perature- controlling radio :frequency instrument (35). The middle section of the radio :frequency ablation tube (10) carries a str i - shaped connecting electrode a radio :frequency electrode (12) i s formed at the distal end of the radio :frequency ablation tube (10) the radio frequency electrode (12) i s connected to the control handle (20) via the stri -shaped connecting electrode. The control handle (20) comprises a control handle t o guide the tube (21) and control the degree of curvature of the distal end of the radio fre quency ablation tube (10), a tube electrode control handle (23) for controlling the degree of opening of the radio :frequency electrode (12), and an auxiliary handle (24) for controlling the tube electrode. The temperature-controlling radio :frequency instrument (35) comprises a central processing and control module (1), a radio frequency releasing module (2) respectively connected t o the central processing and control module (1), a volume impedance measuring module (3), a temperature monitoring module (4) and an alarm and automatic storage module (5) connected to the central processing and control module (1). A n integrated interface (50) i s dis posed at the rear of the control handle (20), and the temperature-controlling radio :frequency instrument (35) i s connected t o the in tegrated interface (50) disposed on the
