The invention discloses a dual-camera module assembling device, which comprises a circuit board feeding unit, a circuit board transmission unit, two groups of circuit board pickup units, two groups ofsix-axis transmission units, two groups of dispensing units, two groups of detection units, two groups of adjusting and fixing units, a motor transmission unit, a motor group feeding unit, a motor pickup unit and a module output unit. Thus, two cameras and lenses at two sides which are integrated can realized AA aligning and assembling at the same time; as a two-working position and four six-axismode is adopted, complete and automatic aligning of the dual camera modules can be realized, the operation speed during the aligning process is quick, the aligning precision is high, and the output ratio of the aligning module is high and is 1.5 to 2.5 times that of an ordinary base.