Fe55 alloy coating is fabricated on 45 steel surface through laser cladding assisted mechanical vibration process. The geometry morphology of cladding coating is observed by optical microscrope. Utilizing AutoCAD, geometry parameters of cladding coating height, width and cladding angle are marked to explore the effects of laser specific energy, amplitude and frequency of mechanical vibration on cladding angle. By means of second- order polynomial of response surface analysis method, a function model being able to express the relationship among cladding angle, laser specific energy, amplitude and frequency is established. Results show that the cladding angle of laser cladding coating is greater when combined with mechanical vibration. Provided with the same laser specific energy and amplitude of vibration, the cladding angle under frequency of 200 Hz is larger than the one with frequency of 100 Hz, and the cladding angle reaches the minimum value when the amplitude is 0.10 mm. The calculated value of cladding angle using the least squares function models is superior to the existing geometry model by being closer to the actual measurement result.