The invention relates to a combining ability and displacement measuring method and device of textile materials containing fiber, yarn, cloth, film and composite material, by which combining ability-displacement curve and stress-strain carve and measurement of associative characteristic value are obtained. The measuring device is consisted of multi-functional clamper suitable for textile materials, frame top beam, middle beam and under beam where sensor and multi-functional clamper can be installed, driving element controlled by middle beam, force and displacement signal collection card And computer with modules of program control and data processing. The invention includes the following properties that force sensor can be fitted on anywhere of the under beam, which can measure force value of moving terminal, and its structure is simple, operation is convenient and multi-functional clamper can be replaced fast and conveniently.