本文提出历史时期的及现代的雨土堆积即相当于地质时期的黄土堆积。文内以对现代雨土堆积的观测资料为依据,论证了雨土的成生条件和物质来源,从而推知第四纪的气候条件是有利于黄土堆积的。无论冰期还是间冰期,只要有形成季风气候的条件,并有充分的物源,就会出现黄土的堆积。 This paper proposes that the accumulation of rainy earth in historical periods and in modern times is equivalent to the accumulation of loess in geological period. Based on the observation data of modern rain-mound accumulation, this article demonstrates the formation conditions and material sources of rain-mined soil, and deduces that the climatic conditions in Quaternary are favorable to the accumulation of loess. Whether in the glacial or interglacials, the accumulation of loess occurs as long as there is a monsoon climate and ample sources of it.