To obtain mechanical indexes of non-homogeneous soils，a study of piezocone penetration test（PCPT）in non-homogeneous soils is conducted.The problem that the PCPT test can not satisfy the design depth is solved by introducing the construction technique of rig-led hole with multiple pipe guards，so that the cone tip resistance（qc），sidewall resistance（fs），probe inclination（l）and dynamic pore water pressure（u2）of non-homogeneous soil can be measured.With the layering statistical analysis and calculation of the above indicators，we calculate the undrained shear strength and internal friction angle indicators of the non-homogeneous soil，which provide critical geotechnical parameters for the foundation design of construction projects.