Provided is an all-pneumatic lens bracket. The all-pneumatic lens bracket is formed in such a manner that a bottom disc, an air pump, a vertical beam, a transverse beam, an oblique beam, ball head assemblies and a rod-end joint bearing are connected. Universal casters are arranged at four feet underneath the bottom disc connected with the vertical beam. The upper end of a top rod of the vertical beam is connected with one ball head assembly, on which the transverse beam, the rod-end joint bearing and a laparoscope are sequentially arranged. The oblique beam is connected between cylinder bodies of the transverse beam and the vertical beam. The transverse beam, the vertical beam and the oblique beam are made by adoption of bi-directional air cylinders. Air is supplied to the air cylinders by air pumps via switches so that relative positions of the laparoscope and a human body are adjusted. The all-pneumatic lens bracket is fairly convenient and practical.