Abstract: Research on Microlepia strigosa under natural drought stress treatment exhibited changes in physical properties.Stress increased relative conductivity,POD activity,soluble sugar and proline content.Soluble protein and MDA content high-low-high;SOD activity,chlorophyll content,total respiratory rate,net photosynthetic rate Intercellular CO₂ concentration and stomatal conductance is on the decline;The CAT activity and Transpiration rate is raise-lower.The membrane system did not exhibit serious damage.The osmotic regulation system had good resistance to dehydration.The protective enzyme system played a role against free radicals;respiration and photosynthesis decreased significantly,but mainly for autonomic regulation of the plant.Results demonstrated that M.strigosa adapted to stress,and showed a strong ability of recovery after drought and exhibited certain endurance ability.