PROBLEM TO BE SOLVED: To provide a planting base sheet mat which can surely plant a plant such as turf on a slope or a flat ground. SOLUTION: The planting base sheet mat 1 formed by filling a filler 4 in a porous structure 2 is characterized in that the filler 4 comprises one or more of earth and sand, fertilizers and charcoal flakes, has a granule diameter adjusted to give a solid phase rate of≤80%, and is filled in the spaces 3 of the porous structure 2. Thereby, inclined planes such as the slopes of developed lands or river levees can surely be protected, and the greening of flat grounds and bedrocks can surely be performed. COPYRIGHT: (C)2004,JPO