Adjustable lumbar interbody fusion device

The utility model discloses an adjustable lumbar interbody fusion device. The adjustable lumbar interbody fusion device comprises an upper supporting body and a lower supporting body, wherein one end of the upper supporting body and one end of the lower supporting body are mutually pivoted; an upper groove body and a lower groove body are respectively and correspondingly formed in the other end of the upper supporting body and the other end of the lower supporting body; a cam is arranged between the upper groove body and the lower groove body; an inverse tooth is respectively formed on each of the two ends of the cam; and a plurality of tooth grooves corresponding to the inverse teeth are formed in the upper groove body and the lower groove body. When the adjustable lumbar interbody fusion device is used, the cam can be shifted to rotate by an external spanner, so that a front opening angle between the upper supporting body and the lower supporting body is opened, and when the front opening angle is opened to