To understand the status of hazardous substances contamination in dried peanut worm from Beihai City.Methods The heavy metal, pesticide residue and microorganism of the dried peanut worm from four main farming areas and one brand product in Beihai were detected. Results No polychlorinated biphenyl, pesticide residue and pathogenic bacteria could be detected. However, the chromium, total numbers of colony and volatile basic nitrogen were out of the standard limits in some samples. All samples contained histamine and other heavy metals not over the standards.Conclusion The health quality condition of dried peanut worm in Beihai overall is good, only some samples contaminated by chromium and total numbers of colony in different degrees.