It is found that the natural chlorophyll can carry out hydrogenation reaction by the Ni cluster catalyst at normal temperature (10℃±2℃) and normal pressure in the dark. Along with the reaction going on, the fresh green color of chlorophyll fades gradually and become colorless in the end. Methods of Ultra violet spectrum, High effect liquid chromatogram, Gas chromatogram on line and X ray diffraction are employed to detect the reactants and the products. After reaction, the original chlorophyll A and chlorophyll B disappear; while some small molecules are found, such as CH 4, NH 3, KMgH 3. The reagents chlorophyll and hematoporphyrin are used as standerd references. The TEM image shows the catalyst particle size is within 3 nm～5 nm in the diameter. It is clear that after catalytic hydrogenation, both the porphyrin cycle and the pyrrole structure are broken. Perhaps the reaction imitates the natural decomposition of chlorophyll under reducing conditions (for example, under the deep sea) in nature. In the deep sea there are high pressure, small organic molecules, and very hot fluid with nm metal coming out of the bottom. From the view point of thermodynamics, it is possible to carry out a reverse reaction of the one mentioned above; and seen in this respective, life could have come from the sea. In fact, the porphyrin cycle is stable in natural environment in the Et OH solution of chlorophyll remained for one year, and in the Et OH solution of dead leaves. It can be found intact in both and it can still carry out similar catalytic reactions. Further experiments are conducted by using pyrrole and tetra hydrogen pyrrole as the reactants to carry out catalytic hydrogenation, and the results show that at normal temperature and pressure the pyrrole cycles are also broken and small molecule gases such as CH 4, C 3H 6, C 4H 10 , C 4H 8 are formed. It is found that the natural chlorophyll can carry out hydrogenation reaction by the Ni cluster catalyst at normal temperature (10 ° C ± 2 ° C) and normal pressure in the dark. Along with the reaction going on, the fresh green color of chlorophyll fades gradually and become colorless in the end. Methods of Ultra violet spectrum, High effect liquid chromatogram, Gas chromatogram on line and X ray diffraction are employed to detect the reactants and the products. After reaction, the original chlorophyll A and chlorophyll B disappear; while some small molecules are found, such as CH 4, NH 3, KMgH 3. The reagents chlorophyll and hematoporphyrin are used as standerd references. The TEM image shows the catalyst particle size is within 3 nm ~ 5 nm in the diameter. It is clear that after catalytic hydrogenation, both the porphyrin cycle and the pyrrole structure are broken. Perhaps the reaction imitates the natural decomposition of chlorophyll under reducing conditions (for example, unde In the deep sea there are high pressure, small organic molecules, and very hot fluid with nm metal coming out of the bottom. From the view point of thermodynamics, it is possible to carry out a reverse reaction of the one mentioned above; and seen in this respective, life could have come from the sea. In fact, the porphyrin cycle is stable in natural environment in the EtOH solution of chlorophyll remained for one year, and in the EtOH solution of Further experiments are conducted by using pyrrole and tetra hydrogen pyrrole as the reactants to carry out catalytic hydrogenation, and the results show that at normal temperature and pressure the pyrrole cycles are also broken and small molecule gases such as CH 4, C 3 H 6, C 4 H 10, C 4 H 8 are formed.