A safety Intravenous Cannula device is disclosed which includes a cannula body having a tube for insertion in a patient, a needle holder wherein the needle holder having a needle in and projecting from the cannula tube the needle holder is loaded with spring holder a port means for holding the safety device of the tongue located on the needle holder and a push button mechanism on the safety device to push the moving tongue attached with the needle holder to insert the protection chamber of the safety device after the insertion process is finished and an end plug means to close the cannula. The needle tip is automatically covered after needle withdrawal to prevent the health-care worker from making accidental contact with the needle tip. Fig. 1
