The utility model provides a trimming and cutting machine for ditch sides of ditches on two sides of a tunnel concrete pavement. The trimming and cutting machine comprises a bracket, a height adjusting device, a cutting drive and a cutting blade, the height adjusting device comprises a vertical rod, a gear device and an adjusting disc, the vertical rod vertically extends upwards from the bracket,a rack is arranged on one side of the vertical rod, and an elevation line is arranged on the front face of the vertical rod; a gear matched with the rack is arranged in the gear device, and the adjusting disc is connected with the gear; the cutting drive is connected with the gear device, and an output shaft of the cutting drive is arranged downwards; and a cutting blade is arranged at the tail end of the output shaft. Compared with the prior art, the trimming and cutting machine for the ditch ledges of the ditches on the two sides of the tunnel concrete pavement achieves height adjustment andhorizontal adjustment, ensures that the elevation lines of the ditch ledges are straight, and further ensures that the flatness and the elevation lines of the tunnel concrete pavement meet the requirements of design and specifications.