A new multiple channel data acquisition and processing system and the composing of every part are introduced The input impedance controlling amplifying circuit of the system is realized by dynamic controlling impedance, so the attenuation of signals is controlled in very small range, and the high-speed data acquisition, storing and transferring of the system are realized by using the high-speed AD7821 and the Hitachi HM628128. The design of communication software and data processing software of the system are realized by using the Objected-Oriented Programming. Many explosion experiments in the field show that the system is reliable, and stable. The system has higher precision, and stronger anti-jamming ability. The communication software and data processing software has the excellence of friendly interface, convenience operation and stronger transplant.