The invention discloses a wireless sensor system, and the system comprises a sensor, a signal conditioner, a voltage-stabilizing circuit, an analog/digital converter, a main control module, a storage module, a communication interface, an upper computer, a power module, and a zero setting module. The sensor, the signal conditioner, the voltage-stabilizing circuit, the analog/digital converter and the main control module are sequentially connected. The main control module is connected with the storage module, the power module and the zero setting module, and is connected with the upper computer through the communication interface. The system can achieve the real-time collection and processing of the data through the upper computer, is high in measurement precision, is strong in anti-interference capability, is long in transmission distance, is convenient for zero setting, and is suitable for popularization and application.