Pinus densiflora Siebold & Zucc. was treated with dried swine excrement at various concentration levels, and their growth reactions and the contents of total kjeldahl nitrogen and total phosphoric acid were analyzed. The results are as follows; 1. When the plants were treated with 0.25% of dried swine excrement, the germination rate of specie was higher than that of the control. However, it showed a tendency to decrease when the treatment concentration got higher than 0.25%. 2. The growth rate of specie was highest when it was treated with 0.25% of dried swine excrement. It tended to decrease with higher treatment concentration than 0.25%. 3. The contents of total kjeldahl nitrogen and total phosphoric acid of Pinus densiflora got higher when the concentration of dried swine excrement increased. The content of total kjeldahl nitrogen got higher in the above ground parts of the plants and the content of total phosphoric acid got higher in the roots. 4. The contents of total kjeldahl nitrogen and total phosphoric acid in the soil were measured before and after the growth experiment of Pinus densiflora treated with dried swine excrement. The contents of nitrogen and phosphoric acid significantly decreased after the experiment. In conclusion, the contents of total kjeldahl nitrogen and total phosphoric acid accumulated in the plants increased as the concentration level of dried swine excrement got higher. The seed germination and plant growth rates were best at 0.25% of dried swine excrement. The treatment of dried swine excrement may bring high effects on increasing the plant growth rate but could damage the plants with higher concentration than they need. Different optimal concentration levels of dried swine excrement for different plants should be found before it is used as fertilizer.