The invention discloses a metal corrosion rate indication probe which is characterized by comprising a test electrode, an electrode end, a first connector, an electric connection assembly, a sealing end and a second connector, wherein the upper end of the test electrode is fixedly connected with the electrode end through the first connector; the first connector is conductive; the sealing end is fixedly connected with the lower end of the test electrode through the second connector. When the metal corrosion rate indication probe is used as a weight method indicating electrode, an electrode of the metal corrosion rate indication probe is dismounted, preprocessed and accurately weighed before detection and then is assembled into a corrosion rate measurement indication probe, the corrosion rate measurement indication probe is put into a corrosion environment, the induction probe is taken out and the electrode of the metal corrosion rate indication probe is dismounted after the defined time is reached, the electrode is subjected to surface treatment and is accurately weighed, and the corrosion rate can be obtained according to the weight change of the electrode of the probe before and after detection.