为了实现桑蚕选种自动化，设计了基于TCD1208AP桑蚕选种识别系统。介绍了用于系统的微控制器STC12C5412AD和线阵图像传感器TCD1208AP主要特点及内部结构，给出了系统的总体设计方案，阐述了硬件电路设计和软件设计流程，最后对系统进行了安装运行，验证了系统的性能指标，达到了预期目标，为下一步的研究指明了方向。 　　Abstract: 　　In order to achieve automation of silkworm seed selection，the silkworm seed selection image recognition system based on TCD1208AP was designed. The main characteristics and inner configuration of MCU STC12C5412AD and TCD1208AP were introduced，the overall design scheme of the system was given，the design of hardware cricuit and software flows were introduced in detail. Finally， the system was performed testing， the systematic performance was validated， the respected aim was finished ， and it gave a direction for further research.