On the base of the BNF definition, we present a PROLOG interpreter system in PROLOG Language (for short, PIP-PROLOG IN PROLOG). As for the interpreter system, we give an algorithm that can be designed in mechanical language.

• 从两个方面叙述了PROLOG系统的设计原理:一个是较高级的PROLOG自解释系统PIP,另一个是可用较低级的语言来实现PROLOG系统的一个算法。