To enhance the utilization of detoxified city sewage sludge，the effect of biological drying sludge on growth and environmental effect of Manila lawn（ Zoysia matrella）were studied in this paper.The results indicated biological drying sludge showed good effect on the growth of the Manila and the improvement of soil fertility.It showed that dramatic enhance- ment of Manila's chlorophyll and biomass with increasing application rates of biological drying sludge.However，more than 1 250 g?m -2 application on the grass，the promotion of Manila were no longer significant.At the same time，there was observable dramatic improvement of the activities of soil urease，sucrase and catalase.Biological drying sludge proved the total and effective nutrient contents of N and P in soil，and not caused pollution of soil heavy metals.Green lawn in the gar- den of the use of biological drying sludge，as long as the annual application rate control below 1 250 g?m -2 was basic secu- rity.These provide experimental basis for the promoting the application of biological drying sludge to gardens and green lands.