In order to provide references for the design of jet formation mechanism and the study on the structure of high efficiency charge, based on experimental result of clubbing water recovery when the jet was formed by a segmented liner, explicit finite software LS-DYNA and tracer point method were used to study the distribution relations of materials when the jet was formed. Under the premise that numerical simulation and experimental results had good consistency, this paper focused on the material distribution law of explosive height above liner with no shell charge structure when the jet was formed by the cone shaped cover. The results indicated that when explosive height above liner was varied from 0.2~2.0 times the charge diameter, the distribution law of the material with the same wall thickness cone shaped jet presented exponential distribution from top to bottom. More proportion material in thickness direction of liner formed jet when charge height increased, while the proportion of material in the axial direction was not affected. When explosive height above liner was greater than 1.6 times the charge diameter, the conversion rate of jet and the penetration depth against steel target did not increase significantly.