The present invention belongs to the new energy cluster effect technical field and relates to a method for quantitatively analyzing an intermittent energy source cluster effect based on time-domain correlation quantification. The method includes the following steps that: the real-time output data of intermittent energy sources are put into statistics; an intermittent energy source autocorrelation coefficient is calculated according to the output data; an intermittent energy source cluster effect correlation coefficient ratio is calculated according to the intermittent energy source autocorrelation coefficient and the installed capacity of the intermittent energy sources; and the result of the intermittent energy source cluster effect is determined according to the intermittent energy source cluster effect correlation coefficient ratio. According to the method of the invention, the intermittent energy source autocorrelation coefficient is calculated, so that the correlation and volatility of the output of the intermittent energy sources under different time scales can be measured; the intermittent energy source cluster effect correlation coefficient ratio is calculated, so that the intermittent energy source cluster effect can be measured; and therefore, troubles caused by the ignorance of the factor of installed capacity in the prior art can be eliminated, and the cluster effect can be quantitatively analyzed more accurately.