A wide-area measurement system（WAMS） based fuzzy adaptive coordinative damping controller is developed for multi-infeed HVDC system. Compared with traditional single input/single output controllers， the proposed damping controller applies a fuzzy logic unit to achieve on-line self-adaptive adjustment of the system phase angle. Meanwhile， its gain K is regulated jointly with the fuzzy logic unit so as to ensure the gain of the whole control channel keeps constant against parameter change during phase shifting. The parameters of proposed controllers are tuned by use of the pole placement method， Prony modal identification， and coordinative optimization theory. The simulation results on China Southern Power Grid show that the proposed damping controller is capable to damp inter-area oscillations， enhance the AC tie-lines' transfer capability， be robust in different operating conditions， and improve the stability of the multi-infeed HVDC system.