目的：探讨空间环境对药用植物的影响。方法：以藿香种子为材料，搭载返回式人造地球卫星，回到地面后研究其过氧化物酶、酯酶和蛋白质的变化。结果：失重组材料的过氧化物酶活性和蛋白质含量与地面组接近，略低于地面对照组，而击中组材料的过氧化物酶活性和蛋白质含量则明显高于地面对照组。３组材料的过氧化物酶和酯酶的电泳图谱基本相同，失重组和地面对照组的蛋白质电泳图谱也基本相同，而击中组材料的蛋白质电泳图谱则与另外两组材料有所区别。结论：微重力对藿香的影响小于高能重离子辐射，不同材料对空间环境的敏感性不同 Objective: To explore the impact of space environment on medicinal plants. Methods: With the seeds of Agastache rugosa L. as the material, a return artificial satellite was mounted and the changes of peroxidase, esterase and protein were studied after returning to the ground. Results: The peroxidase activity and protein content of weightlessness group were similar to those of ground group, slightly lower than that of ground control group, but the peroxidase activity and protein content of the hit group were significantly higher than those of ground control group. Electrophoresis profiles of peroxidase and esterase in the three groups of materials were basically the same, and protein electrophoresis profiles of the weightlessness group and the ground control group were basically the same. However, the protein electrophoresis profiles of the hit group materials were different from those of the other two groups. Conclusion: The effect of microgravity on Agastache rugosa is less than that of high-energy heavy ion radiation, and the sensitivities of different materials to space environment are different