The invention relates to a ditch pipe network protection body for slope protection and collapsing hill drainage and soil fixation. The ditch pipe network protection body for slope protection and collapsing hill drainage and soil fixation can be produced easily in a shaping mode and can be combined, assembled and constructed easily in the open air. According to the technical scheme, the ditch pipe network protection body for slope protection and collapsing hill drainage and soil fixation comprises an upper intercepting ditch which is formed in the top of a slope, a plurality of middle horizontal water guiding ditches which are sequentially formed downwards at intervals from the top of the slope, a lower drainage ditch which is formed in the bottom of the slope and a plurality of vertical drainage pipes which are arranged in parallel at intervals on the slope surface; the upper end and the lower end of each vertical drainage pipe are communicated with the upper intercepting ditch and the lower drainage ditch respectively, and each vertical drainage pipe is sequentially communicated with the middle horizontal water guiding ditches from top to bottom.