The invention relates to an organic fertilizer for agriculture, relates to the technical field of fertilizer and specifically relates to the organic fertilizer for agriculture. The organic fertilizer contains the following materials: 20-30 parts of rice straws, 15-25 parts of corn straws, 10-20 parts of excrements of livestock, 10-20 parts of potato straws, 10-15 parts of flax straws, 3-8 parts of dipotassium phosphate, 2-6 parts of diammonium hydrogen phosphate, 1-4 parts of urea, 3-9 parts of shell powder, 2-7 parts of biological bacteria, 2-7 parts of synergist and 1-4 parts of conditioner. The organic fertilizer for agriculture can effectively promote the capacity of the crops for absorbing nutritional ingredients, can reduce the fertilizer waste and can reduce the damage of chemical fertilizer to soil, so as to achieve nutrition balance, supply the nutrition required by the growth of the crops, achieve the purposes of low investment and high yield, increase the crop quality and increase the economic benefit of the crops.