The invention discloses a production method of sulfur-free fermented preserved cherry tomato. The healthy novel preserved cherry tomato obtained through weakly acidic potential water cleaning, Lactobacillus bulgaricus, Lactobacillus acidophilus and Lactobacillus plantarumc composite bacterium fermentation, a best color protecting agent ratio and an ultrasonic sugar permeation process has the advantages of soft texture, bright red color and unique taste. Added oligosaccharides can promote the growth and the reproduction of probiotics, and also can inhibit the growth of harmful bacteria in the intestine, promote the intestine moistening and bowel relaxing of human bodies to realize safe detoxification, enhance the immunity, reduce the blood fat and cholesterols and promote mineral matter absorption.