为了使现在的电子密码锁更能智能化的管理，让人们更能方便的使用，让其具有更高的安全性和经济性，针对基于单片机的电子密码锁的不足之处，本文采用EDA技术，利用QuartusⅡ工作平台硬件描述语言，设计一种电子密码锁，并通过一片FPGA芯片实现。采用VHDL语言使用自顶向下的方法对系统进行了描述，并在FPGA芯片CycloneⅡ上实现。设计充分利用了FPGA的资源可编程特性，可高效率的对系统进行升级与改进。设计的密码锁可设置任意密码，比一般的四位密码锁具有更高的安全可靠性，因此，采用FPGA 开发的数字系统,不仅具有很高的工作可靠性,其升级与改进也极其方便，应用前景十分良好。-In order to make electronic locks now more intelligent management, so that people more convenient to use, let it have a higher level of security and economy, the inadequacy of microcontroller based electronic locks for, we use EDA technology by QuartusⅡ work platform hardware descr iption language design an electronic lock, and through an FPGA chip. Methods of VHDL using a top-down system are described and implemented in the FPGA chip CycloneⅡ. Designed to take full advantage of the resources of FPGA programmable features, high efficiency of the system can be upgraded and improved. Design can set any password lock, password lock than the average of four has higher safety and reliability, therefore, the use of FPGA development of digital systems, not only has high reliability, it is also extremely easy to upgrade and improvement, prospects are very good.