An electronic apparatus includes a first body, a second body, a pivot set for hinging the second body to the first body and a torsion spring. The pivot set includes a pivot seat and a pivot extending from the pivot seat. The pivot seat is detachably secured to the first body. The pivot rotatably extends into the second body. The torsion spring includes a fixing end thereof fixed to the second body, and a sliding end thereof slidably pressing against the first body.