The invention relates to a compound sweetener suitable for an acid beverage and a preparation method thereof. The compound sweetener comprises the following components: 8.33-16.67 percent of
sucralose, 78.37-88.98 percent of glucose, 2.5-4.5 percent of
maltodextrin, 0.03-0.06 percent of
sclareolide, 0.01-0.05 percent of 2-acetylpyrrole and 0.15-0.35 percent of emulsifier. The process comprises the following steps of: throwing the glucose and
sucralose which accounts for 40-60 percent of the total amount into a multidimensional mixing
machine, and performing primary mixing; emulsifying the residual
sucralose and other auxiliary sweeteners to form stable
emulsion; throwing the
mixed materials subjected to primary mixing into a
fluidized bed of spray
fluidization equipment from the lower part of the
fluidized bed, mixing to accelerate
spiral flow from bottom to top through
positive pressure, and applying pulse negative pressure to the upper part of the
fluidized bed by adjusting air quantity and air direction of an induced air device, so that a plurality of cloth bags on a porous
clapboard vibrate up and down, and the
mixed materials are impacted; and continuously spraying and dispersing the
emulsion to the particles in the fluidized
bed, thus obtaining the compound sweetener.