This paper presents a system about highfrequency signal based on MSP430 MCU for data collection and LCD display. MSP430 is as the core of the system, composed of several parts, the automatic control module, the test signal phaselocked loop module, key control module, signal acquisition and data display module. From the experimental results, the system can control the generation of stable high frequency signals from 950 MHz to 2.15 GHz frequency to complete the sweep, the signal be collected automatically and displayed on the screen in real time .The system has good market prospects and high compatibility, it is simple and convenient, also has the advantage of high precision, stable performance, low price and so on.