The present invention relates to a bulletproof, shock-absorbing helmet and, particularly, to a bulletproof, shock-absorbing helmet having undulations formed in a surface of an outer helmet so that incoming shells are deflected by sloped surfaces of the undulations, and having shock absorbing means provided in a space between the outer helmet and an inner helmet to absorb shocks and prevent injury due to shocks that would otherwise be transmitted to a head and a neck of a wearer when the shells are deflected.