Abstract: 4LH2 type half-feed and self-propelled peanut combine was developed. The paper detailed the structural design, technical performance and characteristic of the complete machine and major working parts. The combine included the parts of chassis, transmission system and working subassembly. The combine body was configured on the side position of the chassis. It employed the chassis of 450 type head-feed rice and wheat combine, driving system of which was configured in two independent ways and equipped with hydraulic continuously variable transmission system. The working subassembly contained the devices for stalk guiding, stalk clamping and conveying, clod removing, peanut picking, as well as the cleaning system and peanut collecting system, etc. Experiment and application show that the combine works stably and swimmingly. The checked indexes were listed as follows: peanut loss percent 2.3%, peanut picking broken percent 0.45%, peanut purity 99%, reliability coefficient 96.2%. All the checking indexes reached or exceed the design technical requirements.