在我国建立社会主义市场经济体制的条件下，将抽样调查作为一种经常性的主要的统计调查方法，视为统计调查方法改革的方向，并且写入了《统计法》，有其充分的理论和实践依据，认识它有助于抽样调查方法的普及和发展。 抽样调查分为概率抽样和非概率抽样，本文所讲的是概率抽样 Under the condition of establishing the socialist market economic system in our country, taking the sample survey as a recurrent major statistical survey method is regarded as the direction of the reform of the statistical survey method and is written into the “Statistical Law” with its full theory And practice basis, it is helpful to popularize and develop the sampling method. Sampling survey is divided into probabilistic sampling and non-probabilistic sampling, this article is about probability sampling