A power measurement method and apparatus, and a storage medium and a program product are disclosed. The power measurement method may include: acquiring a signal power and a signal wavelength of a measurement signal transmitted by a base station under test; calculating an equivalent isotropic radiated power of the measurement signal according to the signal power and the signal wavelength; and calculating a total radiated power of a carrier signal of the base station under test according to the equivalent isotropic radiated power of the measurement signal, a preset target direction parameter and a preset power ratio factor.