A body information analysis apparatus (1) and a method of simulating face shape by using same are provided. The method includes reading a predetermined value of a face shape variable from a memory (17) wherein the face shape variable corresponds to one of a plurality of target face shapes; causing an image fetching module (12) to take a picture and converting same into a digital image; causing a processing unit (10) to identify a face (6) in the digital image and position a plurality of parts of the face (6); determining an original face shape of the face (6) based on the plurality of parts thereof; performing deformation on the face (6) based on the original face shape thereof to generate a simulated face image (80) wherein a face shape variable of the simulate face image (80) complies with the predetermined value; and outputting the simulated face image (80).