Abstract: With the wholeinteract test form of twofactor variance analysis,the rule that the content of fine aggregate and the ratio of lime fly ash affect the early compression strength of lime fly ash bound macadam has been studied.The content of the fine aggregate is of an obvious influence on lime fly ash bound macadam’s early compession strength and it will be more obvious with the increasing of the time.During the early period,the ratio of lime fly ash is not of obviously independent influence to lime fly ash bound macadam’s early compression strength.After a certain time,it is by further research,the optimum content of the fine aggregate has been proposed.