The present invention relates to an intelligent well completion pipe string suitable for a land test well and a downhole test method, and is characterized in that the intelligent well completion pipestring comprises a simple wellhead, an oil pipe, an inner sleeve, an outer sleeve and an oil pipe portable type through type packer. An upper end of the oil pipe is connected with the middle of a lower end of the simple wellhead, a lower end of the oil pipe is sealed by a round plug, an outer wall of the oil pipe is coaxially sleeved with the inner sleeve and the outer sleeve in order, and the bottom of the inner sleeve is sealed by a blind plate. A first annular cavity is formed between the inner sleeve and the outer sleeve, a second annular cavity is formed between the oil pipe and the innersleeve, and the first annular cavity and the second annular cavity are communicated via a through hole disposed at a lower portion of the inner sleeve. The oil pipe portable type through type packeris disposed at the middle of the oil pipe to divide the second annular cavity into an upper layer and a lower layer. Crude Oil extraction optimization can be achieved, production well recovery efficiency can be improved, the number of well repair times after the production well is watered is decreased, and production cost can be reduced.