Abstract: Based on the newly issued Standard for Pollution Control on the Hazardous Waste Landfill（GB 18598—2019）， three design schemes of the landfill units were proposed， and the effects of different schemes on the total design storage capacity and engineering cost were compared. The results showed that with the same land area， when the height of landfill unit increased， the total design storage capacity would increase， but the engineering cost of unit storage capacity would also increase. On the whole， the unit capacity engineering cost of rigid landfill is much higher than that of flexible landfill. Further optimizing the design scheme and reducing the engineering cost will be the key measures for the wide application of rigid landfill.