The invention discloses a video image high-resolution reconstruction method based on wavelet transform. The method comprises the following steps: S1, acquiring a video image signal after interpolatingon a pixel domain; S2, performing the primary wavelet transform to obtain a first high-frequency coefficient, screening the first high-frequency coefficient to obtain a second high-frequency coefficient; S3, reconstructing the second high-frequency coefficient and obtaining the third high-frequency coefficient, combining the third high-frequency coefficient with other high-frequency coefficient to form a fourth high-frequency coefficient; and S4, taking a to-be-reconstructed video image signal as the low-frequency coefficient, combining the low-frequency coefficient with the fourth high-frequency coefficient to form the wavelet coefficient of a reconstruction signal, performing inverse wavelet transform on the wavelet coefficient of the reconstruction signal to obtain the pixel value of the high-resolution video image signal, thereby finishing the video image high-resolution reconstruction. By using the reconstruction method disclosed by the invention, the objective quality and the subjective quality of the reconstructed high-resolution video image can be greatly improved, and the false contouring and block effect and like distortions are effectively avoided.