The invention relates to a desulfurizing agent, in particular to a solid desulfurizing agent. The solid desulfurizing agent is prepared from the following components in parts by weight: 3 to 9 parts of calcium oxide, 5 to 16 parts of ferric oxide, 5 to 10 parts of calcium fluoride, 1 to 6 parts of aluminum oxide, 2 to 8 parts of sodium bicarbonate and 7 to 16 parts of a neodymium-containing coordination polymer. The new neodymium-containing coordination polymer is added into the solid desulfurizing agent, so that the obtained desulfurizing agent has the characteristics of good desulfurizing effect and high sulfur content when compared with the existing conventional solid desulfurizing agent in the market.