Concrete crack self-healing detection method

The invention discloses a concrete crack self-healing detection method. According to the invention, detection is carried out under a crack opening state, minimum depth, maximum depth and width of a detection position are obtained in a crack detection reception instrument; the crack position on the surface of a member is observed by eyes, a crack distribution map is drafted, and the forms, strip numbers, positions, lengths and directions of the cracks are recorded; a fiber grating sensor is placed in a crack structure, a loop metal conduit is fixed outside the fiber sensor, then the loop metal conduit and the fiber sensor are embedded into a concrete structure, the metal conduit is taken out or the fiber sensor is coated with a metal conduit having consistent expansion coefficient with the concrete, and the external load is transmitted to the fiber sensor through the metal conduit for measuring the corresponding data. The fiber lead performs dynamic conduction through a corresponding inductor by the method, th