The research selected batches of wet garbage biogas residues generated by the implementation of garbage classi cation in Shanghai and conducted necessary physical and chemical testing, nutrition index testing, maturity testing, and heavy metal testing. The results show that the pH range of wet garbage biogas residue is 8.19~8.47, the EC ranges 2.91~7.28 mS/cm, the range of organic matter is 31.86%~92.64%. Besides that, the entire nutrient ranges 5.71%~10.26%, germination index ranges 4.5%~6.7%, the heavy metal chromium ranges 25.3~32.7 mg/ kg, the arsenic ranges 3.17~10 mg/kg, the cadmium ranges from ND to 1.4 mg/kg, the mercury ranges from ND to 0.8 mg/kg, and lead ranges 11.0~27.9 mg/kg. All the above indicates that wet garbage biogas residue with higher organic matter and total nutrient content, lower heavy metal content, biogas residue have higher nutritional content and lower biological toxicity, has good resource utilization potential. However, the higher pH and EC affect the reuse of biogas residue. Simultaneously, the shallow humus content and germination index indicate that biogas residue has high phytotoxicity and cannot directly apply to the soil. If the biogas residue needs to apply to the earth, it is necessary to improve the biogas residue's maturity further and reduce the pH and EC content.