The invention discloses a method for regulating flowering time of early spring peach flowers. The method includes the steps: tightening tree bodies of the early spring peach flowers by the aid of ropes, averagely filling a plurality of first plastic bags with warm water, sealing the first plastic bags, uniformly hanging the first plastic bags on peripheries of tree crowns, sleeving whole peach flower trees by the aid of second plastic bags, and tightening the second plastic bags; replacing the warm water every day 30-50 days before designated flowering time, continuously replacing the warm water for 6-8 days, and enabling the early spring peach trees to flower at the designated time. The physical method has flower forcing effects and is good in effect by covering the plastic bags and adding the warm water and high in flowering rate, the flowering time can be advanced by 7-8 days, ornamental characteristics are effectively improved, and the method can be applied to practical regulation of the flowering time of the early spring peach flowers.