Abstract: A portable toilet of the present invention is a portable toilet formed as a foldable structure so as to be fixable and foldable and comprises: a front body part arranged to face forward; a first side body part and a second side body part respectively coupled to both sides of the front body part; a rear body part having the same shape as that of the front body part, arranged so as to face the front body part, and coupled to the first side body part and the second side body part; and a seat plate part having, at both sides thereof, a first seat plate hinge assembly and a second seat plate hinge assembly coupled to upper hinge assemblies respectively formed on upper sides of the first side body part and the second side body part, wherein the front body part comprises: a first front frame having a first front hinge assembly coupled to a first side hinge assembly of the first side body part; a second front frame having a second front hinge assembly coupled to a second side hinge assembly of the second side body pa