Provided is a cement head and an indicator on the same. The indicator comprises an inner shell assembly and an outer shell assembly, and the inner shell assembly is rotatably installed in the outer shell assembly in a sealed mode; the inner shell assembly comprises an inner shell with a through hole, a blocking rod and a first hinge pin, wherein the side wall of the inner shell is provided with an installation opening, the blocking rod is located in the installation opening and rotatably installed on the side wall of the installation opening through the first hinge pin, the blocking rod rotates with the first hinge pin, and the lower end of the blocking rod can be rotated into the inner shell; the outer shell assembly comprises an outer shell with a through hole, a second hinge pin and an observation identifier, wherein the inner shell assembly is installed in the outer shell in a sealed mode, the second hinge pin is installed on the outer shell in a penetrating mode and connected with the first hinge pin, the first hinge pin rotates with the second hinge pin, and the observation identifier is located on the outer side of the outer shell and arranged at the outer end of the second hinge pin. The problems that in related technologies, the indicator of the cement head is not high in applicability, inconvenient to install and low in comprehensive capacity can be solved.