Abstract: The effect of combined treatments of 75 μL/L 1-Methylcyclopropene (1-MCP) combined with two different thicknesses (30, 45 μm) of polyvinyl chloride (PVC) packaging on the storage quality of tumorous stem mustard were investigated at 4 ℃. The results showed that, after 60 days of storage, the firmness of 75 μL/L 1-MCP combined with two different thicknesses of PVC (30 and 45 μm) -treated tumorous stem mustard was 312.13% and 266.72% higher than that of the control group, and the aging index was 50.00% and 25.00% lower than that of the control group, maintaining a high commodity rate; the chlorophyll content was 82.48% and 89.31% higher than that of the control group, and the total amount of free amino acids was lower than that of the control group; The activity of peroxidase (POD) in fresh tissue was 64.29% and 51.23% lower than the control group, and the activity of POD in the peel tissue was 73.47% and 49.88% lower than the control group; the activity of phenylalamine ammonia lyase (PAL) in the fresh tissue was 10.60% and 10.44% lower than the control group, and the activity of PAL in the peel tissue was lower than that of the control group by 71.23% and 64.86%, and inhibited the accumulation of the crude fiber of tumorous stem mustard. This research can provide certain technical guidance and theoretical reference for the storage and preservation of tumorous stem mustard.