The utility model relates to a detect at labour oil pipeline ultrasonic phased array guided wave and use test block, including the test block, the material of test block for go up one section 2.2 meters length conduct preparation reference block of intercepting from oil pipeline (3), test block and oil pipeline (3) material, specification are the same, be provided with guided wave probe (2) and array distribution round dimple (1) in the test block, the degree of depth of every row round dimple (1) scales up in proper order, and the diameter of every round dimple of being listed as (1) scales up in proper order. Oil pipeline (3) diameter 160mm, wall thickness 16mm. Round dimple (1) sets up one row along girth direction every 150mm of test block. The utility model discloses fundamentally hassolved and has detected a no reference block difficult problem at labour oil pipeline ultrasonic phased array guided wave, adopts material, the specification the same with oil pipeline to complete, has guaranteed detectivity, improved detection quality, and design and operation is simple, convenient to use.