The invention relates to a method for comprehensively utilizing chemically polished waste phosphoric acid, which comprises the following steps: firstly, diluting the chemically polished waste phosphoric acid until the relative density is between 1.1 and 1.2, slowly adding lime cream, controlling the reaction temperature to be between 50 and 80 DEG C, adjusting the pH value to be between 2.8 and 3.0, and filtering to obtain deposit, namely fertilizer calcium hydrophosphate; and secondly, continuously adding the lime cream into filtrate obtained in the first step, controlling the reaction temperature to be between 50 and 60 DEG C and the pH value of the reaction endpoint to be between 6.5 and 6.8, and filtering to obtain deposit, namely feed-grade calcium hydrophosphate. The method mainly produces phosphorus-containing products in a form of calcium hydrophosphate, generates a small quantity of sludge during reaction and even does not generate the slurry, reduces the landfill cost, achieves secondary economic benefit, has simple production process, low cost and high utilization rate of phosphorus, simultaneously realizes emission meeting the standard of TP, and is easy to realize mass production.