Abstract: The structural and functional features of ultrasonic testing calibration blocks and reference blocks in Chinese national or industrial standard and specifications were analysed. With the aims of supporting experiments teaching and practices of non-destructive testing course, multi-function test piece of ultrasonic testing has been designed. The piece is equipped with typical features, such as plate surface, cylinder surface, rectangle groove, flat bottom hole, side drilled hole, and short side-drilled hole. The interference between different functional features has been avoided. It could satisfy the requirement of teaching and experiment with a unique part. The piece can be applied for the inspection of resolution, sensitivity, and amplitude linearity of normal probe, angle probe and ultrasonic testing equipment, and beam index of angle probe. It also can be used to experimental practise of inspecting the simulated flaws realised by reference reflectors.