An electronic device for speckle imaging comprising: a body; a head being extended from the body, the head including an internal space for accommodating: a light transmission circle being formed on the head; and a measurement module being installed in the internal space of the head, the measurement module facing the light transmission circle, wherein the measurement module includes: a plurality of first light sources (220, 222, 224) providing the light transmission circle with light for speckle imaging; an image sensor being positioned between the light transmission circle and the plurality of first light sources (220, 222, 224), the image sensor being spaced apart from the plurality of first light sources (220, 222, 224), the image sensor facing the light transmission circle; and a lens covering the image sensor, the lens being positioned between the image sensor and the light transmission circle, wherein the plurality of first light sources (220, 222, 224) comprises three first light sources (220, 222, 224), two of which are disposed at two corners of the internal space, the three first light sources (220, 222, 224) being disposed around the image sensor in a triangular shape, such that each first light source (220, 222, 224) corresponds to a vertex of the triangle. a body; a head being extended from the body, the head including an internal space for accommodating: a light transmission circle being formed on the head; and a measurement module being installed in the internal space of the head, the measurement module facing the light transmission circle, a light transmission circle being formed on the head; and a measurement module being installed in the internal space of the head, the measurement module facing the light transmission circle, wherein the measurement module includes: a plurality of first light sources (220, 222, 224) providing the light transmission circle with light for speckle imaging; an image sensor being positioned between the light transmission circle and the plurality of first light sources (220, 222, 224), the image sensor being spaced apart from the plurality of first light sources (220, 222, 224), the image sensor facing the light transmission circle; and a lens covering the image sensor, the lens being positioned between the image sensor and the light transmission circle, a plurality of first light sources (220, 222, 224) providing the light transmission circle with light for speckle imaging; an image sensor being positioned between the light transmission circle and the plurality of first light sources (220, 222, 224), the image sensor being spaced apart from the plurality of first light sources (220, 222, 224), the image sensor facing the light transmission circle; and a lens covering the image sensor, the lens being positioned between the image sensor and the light transmission circle, wherein the plurality of first light sources (220, 222, 224) comprises three first light sources (220, 222, 224), two of which are disposed at two corners of the internal space, the three first light sources (220, 222, 224) being disposed around the image sensor in a triangular shape, such that each first light source (220, 222, 224) corresponds to a vertex of the triangle.