For making better use of spectrum resources, the portable system of radio spectrum management will be used to manage them. The hardware which is based on the core processing module of PIC24FJ64GA004, has detected the spectrum signal between 15 MHz and 2 700 MHz, and has completed the data interaction between hardware and software through the mini-USB communication interface, meanwhile these spectrum data have been shown at real time with graphs and data, stored, analyzed and planned in the software. The experimental results show that the system which is of certain practical value, provides an efficient tool for improving the use ratio of spectrum resources.