The invention discloses a horizontal type high voltage cable spreading machine control system based on an intelligent hydraulic control technology. The horizontal type high voltage cable spreading machine control system based on the intelligent hydraulic control technology comprises an unreeling support, wherein the unreeling support comprises a telescopic beam and a telescopic girder which realize adjustment for the length and the width of the unreeling support, then the unreeling support is enabled to adapt to a winding reel, the support outer diameter and the support length of the winding reel vary within a certain range, the unreeling support does not need to be separately added according to the specification of the winding reel, and the usable range of the unreeling support is widened. When a length detection device detects that the length of the telescopic girder is not equal to the length of the winding reel, the length detection device sends a signal to a control device, the control device judges if the length of the telescopic girder is coincident with the length of the winding reel, if yes, the telescopic girder keeps still; and if not, the control device controls a girder drive cylinder to correspondingly stretch out and draw back until the telescopic girder is of the same length as the winding reel, thereby enabling the telescopic girder to realize automatic stretching and contraction according to the length of the winding reel, and realizing high automatic degree, and therefore the horizontal type high voltage cable spreading machine control system based on theintelligent hydraulic control technology is high in automatic degree and good in universality.