The present invention provides a dog training clicker, including a first structural part, a sliding assembly and a second structural part overlaid and arranged in sequence along a first direction; the first structural part includes a first outer shell, the first outer shell is internally provided with a first accommodating space, an elastic sounding plate and a floating button are arranged in the first accommodating space, and the floating button abuts against the elastic sounding plate; the second structural part includes a second outer shell, the first structural part is in sliding connection with the second structural part through the sliding assembly, and the first direction is perpendicular to a second direction.