Piezoelectric energy harvesters are widely used as a new energy technology. Large-area paving can be used for road deformation energy in railways, highways, airports, subway entrances, etc., and power street lights, signal control systems, automatic card readers, etc. It can be combined with wearable devices to collect mechanical energy generated when people walk to charge and power low-power mobile devices. Piezoelectric energy collection technology can also be combined with MEMS technology to power micro-nano sensors and on-chip systems, and is used in fields such as the Internet of Things, wireless sensor networks, intelligent transportation, industrial monitoring, environmental testing, and biomedicine. Piezoelectric vibration energy collectors developed based on high-performance piezoelectric single crystal materials have the advantages of high power density, small size, and integration; the piezoelectric energy collectors output alternating current, which can be used for functional circuits by using subsequent rectification circuits and voltage changes; It can provide self-energy and has formed products with certain theoretical research foundations and prototype products, such as piezoelectric energy-collecting floors, wireless passive switches, intelligent transportation systems, etc. Piezoelectric energy collectors have received support from the Ministry of Science and Technology (12 million yuan), National Natural Science Foundation (800,000 yuan) and Shanghai City "Spring Bamboo Shoots Plan"(10 million yuan) support, hoping to cooperate with enterprises with certain production scale and market development capabilities to promote and apply.