The invention discloses a reflected wave stretching correction method for a three-dimensional vertical seismic profile. The reflected wave stretching correction method comprises the following steps: according to the speed of a reflected wave in a zero-offset (or near-offset) vertical seismic profile and the speed of a reflected wave in a far-offset vertical seismic profile, determining the correspondence between a zero-offset (or near-offset) trace reflection point and a far-offset trace reflection point; selecting a certain time window, and carrying out optimal approximation according to the least square method to calculate an inverse operator; applying the calculated inverse operator to a corresponding far-offset vertical seismic profile trace, so as to eliminate the impact of stretching distortion on reflected wave imaging. Through the adoption of the reflected wave stretching correction method, shallow lineups with higher far-offset stretching rates can be corrected, the resolution of the reflected wave imaging is effectively improved, and the quality of the reflected wave imaging for the three-dimensional vertical seismic profile is improved.