The present invention relates to a spontaneous infiltration absorption measurement method used for shale, and the method comprises the following steps in sequential order: a rock core is put into a rock core holder, pipelines of a measuring means are connected, and tightness is checked; a control valve on the top of the rock core holder is closed or opened, meanwhile a control valve on the bottom of the rock core holder is opened; water is injected into a graduated tube, the water flows pass a pipeline on the bottom of the rock core holder, and then reaches the control valve on the bottom of the rock core holder; when water is discharged from the control valve on the bottom of the rock core holder, the control valve on the bottom of the rock core holder is closed; confining pressure is applied to the rock core by a confining pressure pump, the rock core absorbs the water, and rock core water absorption volume is calculated. After the pipelines of the measuring means are connected, and the tightness is checked, a heating means can also be started, heating temperature and heating time are set for applying high-temperature environment to the rock core. The spontaneous infiltration absorption measurement method is easy to operate, simple in structure, and cost-saving, and can simulate high temperature and high pressure environment, simulation processes are more realistic, and measured results are more reliable.