The utility model relates to an aerogenerator blade is wheeled piezoelectricity generator of self excitation for monitoring system belongs to piezoelectricity power generation sector. Wallboard and shunt about on the main shaft there being the cover, the tip is equipped with the clamp plate, about wallboard axle sleeve and shunt axle sleeve respectively the crimping have the metal substrate, left and right sides wallboard axle sleeve, shunt axle sleeve and metal substrate pass through the parallel key and are connected with the main shaft, cantilever beam on the metal substrate constitutes piezoelectric vibrator with the piezoelectricity wafer that bonds, the piezoelectric vibrator symmetry installation of shunt both sides controls pushing away a class board symmetry installation, casing left and right sides both ends link to each other with left and right sides wallboard respectively, control wallboard, casing and shunt axle sleeve and constitute the generator cavity jointly, and the cavity intussuseption is filled with liquid. The advantage characteristic: utilize the shunt and push away class board to change a liquid flow state and realize a piezoelectric vibrator vibrational excitation, no rigidity contact impact, free of electromagnetic interference, need not external fixed stay, can arrange blade or its pivot in as independent part on, especially be suitable for requirement free of electromagnetic interference's wireless sensing monitoring system.