The invention relates to a method for preparing natural color bamboo pulp fiber household paper. The method includes the steps that firstly, digesting is conducted, natural clustered bamboo chips are placed in a specially-made digesting container, NaOH and Na2S are added to the container, and then steaming is conducted on the bamboo chips; secondly, large bulks of undigested bamboo chips, undigested bamboo joints, undigested crude fibers, gravels in raw materials and the like are removed through a screening and purifying device, black liquor in crude pulp is extracted through a pulp washing device, and then bamboo pulp fibers are primarily obtained; thirdly, the oxygen delignification working process is conducted on the obtained bamboo pulp fibers to further remove residual lignin in the bamboo pulp fibers, the bamboo pulp fibers are completely washed through the pulp washing device, and eventually natural color bamboo fibers are obtained; fourthly, the natural color bamboo fibers are pulped, pulp is placed in a pulp mixing pool, and coniferous long fibers are mixed into the pulp mixing pool; fifthly, additives are added to the pulp generated in the fourth step according to different products; sixthly, the pulp is fully stirred; seventhly, the mixed natural color bamboo pulp is online diluted and then processed through a purification system to further remove impurities; eventually, pulp is placed on a screen, paper is manufactured with the pulp, a layer of wet paper sheet is formed and processed, and then natural color bamboo pulp fiber household paper body paper is obtained. The method has the advantages that the prepared paper is greener, more environmentally friendly and healthier.