To provide a mobile terminal, a drawing system and a drawing method enabling highly flexible edition of an image photographed by a camera.

The mobile terminal 1 includes an imaging part 11, a coordinate constitution part 12, a drawing coordinate acquisition part 13, a drawing coordinate storage part 14, and a display part 15. The imaging part 11 images an object space. The coordinate constitution part 12 extracts feature points in the object space imaged by the imaging part 11 to constitute the three-dimensional coordinate system of the object space on the basis of the feature points. The drawing coordinate acquisition part 13 recognizes a drawing means and acquires coordinate information of the drawing means. The drawing coordinate storage part 14 stores the coordinate information of the drawing means acquired by the drawing coordinate acquisition part. The display part 15 displays a stereoscopic drawn image wherein the locus of the drawing means is displayed in the three-dimensional coordinate system of the object space, on the basis of coordinate information of the drawing means stored in the drawing coordinate storage part.