This study was conducted by the slump test and the consistency test of the cement mixed soil which is soil mixed with cement to investigate and estimate the difficulty degree of work and the proper water content. So I would like to present the fundamental data that establish the work standard of the cement mixed soil. In conclusion, in this study the slump value of the cement mixed soil increases over-all according to the increase of the water content although it has a little difference of the increase range and it is smaller than one of the soil. It is estimated that the aggregating and throwing work of the cement mixed soil which is mixed with 6% and 9% cement would be fine when it has the $25%{sim}27%$ water content and the wall plastering work is the $30%{sim}32%$ and the floor plastering work is the $30%{sim}35%$ and the flowing and pouring work is the $40%{sim}42%$ water content as well as the mold compacting work is the 20%.