The invention discloses a method for preparing propylene catalyst by using carbinol, which successfully solves the problems that the similar catalyst has low yield on propylene (final target outcome) and low propylene/ethane (P/E) ratio. The method specifically comprises the following steps of firstly processing sodium-type ZSM-5 molecular sieve powder with the silica and aluminium molar ratio of100 to 300 by 0.2-2Mol/L of at least one solution out of hydrochloric acid, sulphuric acid or nitric acid for 1-8 hours under the temperature of 60-95 DEG C; subsequently processing the sodium-type ZSM-5 molecular sieve powder in 0.4-4Mol/L of at least one solution out of sodium bicarbonate, sodium carbonate, ammonium bicarbonate, ammonium carbonate or potassium carbonate for 3-18 hours under thetemperature of 60-95 DEG C; processing the sodium-type ZSM-5 molecular sieve powder in 0.2Mol/L of at least one acidic solution out of hydrochloric acid, sulphuric acid, nitric acid or ammonium chloride solution for 1-8 hours under the temperature of 69 to 95 DEG C; washing and filtering by deionized water to remove impurity ions such as chloride ions and the like in the filtrate; and drying the solution and roasting the mixture for 2-10 hours under the temperature of 550 to 700 DEG C, thus obtaining the required ZSM-5 molecular sieve catalysts. The catalyst prepared by the method has high propylene selectivity and high P/E weight ratio, does not need to add any adhesives, has simple preparation process, can have better carbinol prepared propylene catalyst catalytic activity under lower temperature (410 DEG C), and effectively reduces the preparation cost and the application cost of the catalyst.