A terminal base having a fastening structure for collaborating with a cable having a core, the terminal base comprising: a body, the body including an accommodating space, a wiring hole, a receiving hole, and a hook element disposed adjacent to the receiving hole, the wiring hole and the receiving hole communicating with the accommodating space, the hook element being elastically connected to the body; a conductive terminal disposed in the accommodating space, the conductive terminal including two leads protruding outside of the body; a metal elastic element disposed inside the accommodating space, the metal elastic element including a contact end and a movable end, the contact end being in contact with the conductive terminal, the movable end being elastically disposed inside the accommodating space; and a press block movably disposed in the receiving hole, the press block pressing the movable end of the metal elastic element to be engaged with the hook element; characterized in that the press block includes two engagement points spaced apart from each other and an inclined recess between the two engagement points, the hook portion includes an extension rod and two clasp portions connected to the extension rod, and each of the engagement points is disposed corresponding to each of the clasp portions to be engaged with the same, each of the clasp portions includes a first inclined surface, the press block includes a second inclined surface disposed corresponding to the first inclined surface, when the engagement point of the press block contacts the clasp portion to engage the same, the first inclined surface moves against the second inclined surface, so that the hook element is resiliently displaced to be engaged with the engagement point. a body, the body including an accommodating space, a wiring hole, a receiving hole, and a hook element disposed adjacent to the receiving hole, the wiring hole and the receiving hole communicating with the accommodating space, the hook element being elastically connected to the body; a conductive terminal disposed in the accommodating space, the conductive terminal including two leads protruding outside of the body; a metal elastic element disposed inside the accommodating space, the metal elastic element including a contact end and a movable end, the contact end being in contact with the conductive terminal, the movable end being elastically disposed inside the accommodating space; and a press block movably disposed in the receiving hole, the press block pressing the movable end of the metal elastic element to be engaged with the hook element; characterized in that the press block includes two engagement points spaced apart from each other and an inclined recess between the two engagement points, the hook portion includes an extension rod and two clasp portions connected to the extension rod, and each of the engagement points is disposed corresponding to each of the clasp portions to be engaged with the same, each of the clasp portions includes a first inclined surface, the press block includes a second inclined surface disposed corresponding to the first inclined surface, when the engagement point of the press block contacts the clasp portion to engage the same, the first inclined surface moves against the second inclined surface, so that the hook element is resiliently displaced to be engaged with the engagement point.