This paper introduces the principle of oil well testing system taking of AT89C2051 as the core.The electrocircuit and the software testing system are designed according to this principle.

• 介绍了以AT89C2051单片机为核心构成的油井测试系统的工作原理,设计了该系统的硬件电路,开发并调试了软件测试系统。