A pot experiment was carried out to study the effect of irrigation with secondary urban sewage on several landscape plants’ soil，establishing sewage water irrigation treatment and fresh water irrigation treatment（CK）.The landscape plants adopted in the experiment were marigold（Tgetes erectaL），multicoloured pink（DinathusL），cockscomb（Celosia argenteavarcristata ），（TestucaarundinaceaL），Zinnia（Zinnia elegans jacq）.The results showed that the contents of the total nitrogen，the available phosphorus and the available potassium were not significant differences between the two treatments，but the available potassium was a tendency of increasing.The content of total salt was increased in sewage water irrigation treatment，and the highest total salt content was 0075%，but the level was still safe for the soil and the plants.It was showed that short time irrigation with secondary urban sewage could not lead to the soil salinization and bring on nutrient stress for the plants.Soil pH analysis indicated that pH were increased by the secondary municipal effluent，but there were no obvious difference compared with the control.That is to say，the secondary urban sewage irrigation effect little the soil pH.However，whether it could be enhance and bring harm for the landscape plants by long time irrigation with the secondary urban sewage need further test to validate.