A kind of cell pulls to stretch to add to carry device, involve a medical science experiment instrument in of the cell mechanics add to carry device. The invention mainly includes a machine, motive system and spreads to move system and pulls to stretch sport part. Motive system mainly from controller, actuator, tread to constitute into the electrical engineering; Spread to move the system main grenadine and pull pole composing; Pull to stretch sport part mainly from glide a support, fix support, direction pole, pioneer pole piece and behind lead a pole piece composing. Because the invention has and pull and stretch process to the cell steady, the cell is subjected to dint even, the ability accurate control pulls and stretches range and frequency, pulling and stretching distance can the convenience regulates within the scope of 0~60 mm, can make under same condition of the experiment have good consistency etc. characteristics, so the invention can used to a medical science experiment the cell mechanics of the instrument and add and carry device extensively, is the ideal which carries on mechanics incitement and responds to a research to the living creature organization and the cellin the biomechanics and add and carry device.