Expandable tubular drilling technology is an emerging technology which can be used to optimize casing program and reduce the drilling cost .This paper discusses the actuality and a kind of ground experimental method of this technology, in addition, a simulation analysis for the expansion process is carried out based on non-linear FEA technique, which provides effective data.Expandable tubular drilling technology is an emerging technology which can be used to optimize casing program and reduce the drilling cost .This paper discusses the research status of this technology and a kind of ground experimental method; in addition, a simulation analysis for the expansion process is carried out based on non-linear FEA technique, which provides effective data.