干酪根晚期生油说很难圆满解释碳酸盐岩的生烃机制。本文从新的视角探讨了在碳酸盐岩中还存在一类潜在的生烃母质—脂肪酸盐。由于脂肪酸盐物化性质独特，很难从地质体中得到纯脂肪酸盐，因此我们采用了化学合成方法制备硬脂酸镁（ＲＣＯＯ）２Ｍｇ，并对硬脂酸镁、硬脂酸及硬脂酸镁加碳酸钙三个系列的样品进行了３００℃和３５０℃的常规热解实验；实验结果表明脂肪酸盐在热解温度下能够生成烃类物质，并且脂肪酸盐的烃类转化率明显高于脂肪酸。脂肪酸盐的热解断裂方式中α＞β＞γ，与脂肪酸的断裂方式相比，其β和γ断裂方式较强。这一实验结果可能会对碳酸盐岩的评价提供新的启示 Early kerogen oil production is hard to fully explain the hydrocarbon generation mechanism. This article from a new perspective discusses the existence of carbonate in a class of potential hydrocarbon generation parent fatty acids - salts. Due to the unique physico-chemical properties of fatty acid salts, it is difficult to obtain pure fatty acid salts from geologic bodies. Therefore, we used a chemical synthesis method to prepare 2Mg of magnesium stearate (RCOO), and used magnesium stearate, stearic acid and stearin Magnesium carbonate and calcium carbonate were used to conduct the conventional pyrolysis experiments at 300 ℃ and 350 ℃. The experimental results show that the fatty acid salts can generate hydrocarbons at the pyrolysis temperature and the hydrocarbon conversion rate of fatty acid salts is obvious Higher than fatty acids. Α> β> γ in the pyrolysis fracture mode of fatty acid salt, and β and γ fracture mode is stronger than that of fatty acid. The results of this experiment may provide new insights into the evaluation of carbonate rocks