METHODS: Based on a novel microbial agent, RESULTS: MYSH significantly reduced soil paclobutrazol residue by 75.18% over five months, compared to a natural degradation rate of 50.72% over a year. Compared to the control group, the MYSH-treated group enhanced soil sucrase activity, soil urease activity, and soil alkaline phosphatase activity, with rates of 47.81%, 46.70%, and 216.66%, respectively. Additionally, MYSH improved CONCLUSIONS: This study demonstrates the dual role of MYSH as both an environmental remediation agent and a crop productivity enhancer for the first time. By reducing paclobutrazol residue and enhancing soil health and crop production, MYSH shows great potential for broader application in sustainable agricultural practices. This research highlights the efficacy of microbial agents in addressing agrochemical contamination and promoting sustainable farming, providing a valuable contribution to the development of eco-friendly agricultural solutions.