The invention provides a test device for the bending and expansion properties of a pipe. The test device comprises an upper base plate, a lower base plate, two sets of straight flange insert blocks and two sets of bending section insert blocks. The straight flange insert blocks and the bending section insert blocks are arranged between the upper base plate and the lower base plate in a clamped mode, and bending section insert blocks are arranged between the two sets of the straight flange insert blocks in a clamped mode to form a cavity penetrating through the straight flange insert blocks and the bending section insert blocks. The outer side of one straight flange insert block is provided with a high pressure connector used for fill the cavity with liquid. The test device for the bending and expansion properties of the pipe is simple and compact in structure and easy to operate. According to the test device for the bending and expansion properties of the pipe, a guiding function is achieved for making a process scheme of liquid filling for a complex part, and a key index influencing the forming property of the pipe can be obtained by studying the forming property of the pipe, so that some difficult problems in design and material selection of a tubular part are solved.