本文介绍了单片机内部密码破解的常用方法，重点说明了侵入型攻击／物理攻击方法的详细步骤，最后，从我们电子解密经历出发，提出了对付破解的几点建议，希望对国内产品知识的保护作出贡献。-This article describes the internal microcontroller common method of password cracking, highlights the invasive type of attack/physical attack in detail, finally, starting from our experience of electronic decryption proposed several suggestions to deal with crack, I hope the protection of the domestic product knowledge contribute.