Disposable syringe with retractable needle includes a cylindrical body (1), a plunger (2) with grooves (3) and base (4), a needle (7) supported by a support (9), a housing (10) adapted for inserting the support (9) and surrounded by a seal gasket (6) which is integral with a head/support (5) of the plunger (2), a neck (8) arranged at the upper end of the cylindrical body (1), and a separation element (11) adapted to make the needle (7) collapse inside the cylindrical body (1) after the use of the syringe.
