The invention relates to an energy-saving scouring and bleaching method comprising the following steps: adding water and additive to fabric at 40 DEG C; increasing the temperature fabric of the fabric to 98 DEG C, and keeping the temperature of 98 DEG C for 30 min; washing the fabric, decreasing the temperature of the fabric to 75 DEG C, discharging the water, and controlling the temperature at 75 DEG C or below 75 DEG C; adding water and acetic acid HAC to the fabric for the second time, increasing the temperature of the fabric to 60 DEG C, keeping the temperature of 60 DEG C for 15 min, discharging water, and controlling the temperature at 60 DEG C or below 60 DEG C; adding water to the fabric for the third time for 5 min, discharging water; adding water to the fabric for the fourth time, and dying the fabric. The additive comprises the following components by weight percent: 2.5-5.5 percent of ethylene diamine tetraacetic acid (EDTA), 0-0.5 percent of hydrogen peroxide stabilizer, 5-15 percent of bleaching synergist, 10-15 percent of chelating agent, 54.5-77 percent of alkaline agent and 5-10 percent of surfactant. The invention solves the problems of long scouring and bleaching time and high energy consumption existing in the prior art.