Abstract: The embodiments herein provide a port apparatus for rectus sheath tunneling. The apparatus comprises a mandarin for creating tissue tract when advanced through patient's body. Mandarin comprises a sharp shaft and a mandarin cap. The shaft is conically tapered at distal end to avoid damage to peritoneum tissues. The proximal end of mandarin is attached with a mandarin cap. A cannula overlaying mandarin is provided for administering medication, inserting surgical instrument or drawing fluids when placed in patient's body. Cannula comprises hollow tube for reaching peritoneal cavity. Cannula comprises head assembly detachably attached to proximal end of hollow tube for providing grasping surface to surgeon. The head assembly comprises cannula cap and cup for holding unidirectional valve for preventing backflow of air. Mandarin extends beyond the length of cannula at distal end for guiding cannula through tissue tract. Mandarin cap prevents complete passage of mandarin through cannula during procedure.