The invention discloses a method for increasing adhesion and anti-hydraulic pressure of shield tail sealing grease. The method is characterized by adding a reinforcing material or an adhesion accelerator in grease, thus increasing the comprehensive performance of the grease. The grease is prepared from the following ingredients: 6 to 30 percent of base oil, 5 to 30 percent of tackifier, 0 to 20 percent of main polymer, 0.2 to 3 percent of adhesion accelerator, 1 to 5 percent of reinforcing material, 1.5 to 10 percent of fiber, 1 to 5 percent of adjuvant and the balance of powder. The method for increasing the adhesion and the anti-hydraulic pressure of the shield tail seal grease, disclosed by the invention, has the following advantages: 1, the adhesion is strong, and the grease can stay on an adhesion tester for not less than 14 minutes at 25 DEG C; 2, the pumping performance is excellent, and the pumping capacity can reach 30g/min; 3, the sealing performance is high, the grease and water cannot leak under the conditions of 25 DEG C and 1.6 MPa, and good water blasting resistance is obtained. The prepared shield tail sealing grease is used for shield tail sealing of a shield tunneling machine in tunnel engineering, and has the characteristics of strong adhesion, excellent pumping performance, high anti-hydraulic pressure sealing performance, stable performance, low cost and environment friendliness.