The present invention relates to a portable body fluid testing device which is used by being easily attached to and detached from the portable terminal of a user and can be hygienically used by being easily replaceable. The portable body fluid testing device according to the present invention comprises: a test unit which has a sample part, onto which a body fluid of a user is applied, formed on one surface of a body thereof lengthily formed in one direction, is provided with a magnifying lens group, and has a contact part formed on the other surface of the body； and a user terminal which has a camera coming into contact with the contact part of the test unit, captures an image of the body fluid, applied to the sample part, by means of the camera, analyzes the image of the body fluid, and thereby determines the state of the body fluid.
