A modular logic processing resource reconfigurable method is proposed for the design concept of software defined radio, mainly focusing on the design and implementation of Field Programmable Gate Array (FPGA) local dynamic reconstruction. The design methods and implementation processes of three dynamic reconfigurable functions were mainly described, and experimental verification was conducted on the local dynamic reconstruction of the system. Through experiments, it has been shown that the FPGA of the architecture has fast local dynamic reconstruction speed and high reliability, meeting the requirements of dynamically loading multiple waveforms on the platform.