The present invention discloses to an organic and inorganic compound fertilizer special for promoting growth and improving disease resistance of lotus roots. The compound fertilizer is prepared from fermented chicken manure, wheat straw, mushroom residue, plant ash, wormcast, urea, ammonium zinc phosphate, ammonium polyphosphate, potassium nitrate, trace elements, compound bacteria, humic acid, chitosan, alginic acid, 3, 4-dimethylpyrazole phosphate, sodium tetraphenylborate, ammonium citrate, potassium thiosulfate, polyaspartic acid, dicyandiamide, sodium nitrophenolate, yttrium nitrate, nanocarbon, rotenone and sucrase. The compound fertilizer is reasonable in formula, balanced in nutrition, capable of promoting the growth of the lotus roots and improving disease resistance of the lotus roots at the same time, and high in fertilizer utilization rate.