PURPOSE: To provide a grout measuring apparatus, which can continuously measure temperatures, specific gravities and viscosities in a supplying path with a simple constitution.

CONSTITUTION: A measuring pipe 10, whose both ends are connected to a supplying pipe 6 for supplying grout, and which constitutes a part of the supplying pipe 6, is provided. A temperature measuring unit 11 for measuring the temperature of the grout, a specific-gravity measuring unit 12, which measures the specific gravity, and a viscosity measuring unit 13, which measures the viscosity, are provided on the measuring pipe 10, and a unitary body is formed.