To provide a display method of a soil constitution by a CPT capable of displaying data of a field test by the CPT and the soil constitution by soil determination on the basis thereof, intelligibly to a user.

In this display method of the soil constitution on the basis of the CPT, the soil constitution is displayed by colored pole-shaped 1a and 1b formed by accumulating and plotting soil properties discriminated at each measuring depth on the basis of data of a tip resistance, an interval water pressure and a circumferential friction acquired by the CPT, in different colors relative to each soil property in the measuring depth direction from the surface layer, and a legend 2 of the soil property colors is also displayed. The data of the tip resistance, the interval water pressure and the circumferential friction can be displayed together.