Abstract: An egg weighing and sorting system for micro egg poultry breeding industry was designed.The system based on single chip microcomputer as core and six curved pallets as the mass bearing surface，by key module set weighing weight level，using parallel hole 6 double cantilever beam measuring strain sensors corresponding to curved surface in the tray.The weight and grade of each curved surface tray were displayed by LCD.The system was compact and easy to use.Compared with egg distribution mode of one person and one scale，efficiency of egg separation was greatly improved.For the large-scale assembly line egg separation mode，the cost was greatly reduced and flexibility was relatively high，which was suitable for egg rapid weighing and sorting in the micro egg poultry breeding industry.