The invention discloses a clozapine tablet and a preparation method thereof. The clozapine tablet is prepared from the main material ingredients in mass fraction: 25 parts of clozapine, 61.2 parts ofmicrocrystalline cellulose, 3.8 parts of lactose, the defined amount of povidone, 0.5 part of magnesium stearate, 1.4 parts of talcum powder and 0.4 part of silicon dioxide. The preparation method ofthe clozapine tablet comprises the following specific operation steps: step 1, sieving the clozapine by a 100-mesh sieve for standby application; step 2, weighing the clozapine, the microcrystalline cellulose and the lactose according to a formula in the claim 1 and jointly putting into a wet mixing granulator to be mixed evenly; step 3, weighing the defined amount of the povidone and adding waterto dissolve the povidone to be prepared into a water solution; step 4, adding the defined amount of binding agent into mixed powder in the last step to be prepared into an appropriate flexible material. According to the clozapine tablet disclosed by the invention, existing general auxiliary materials are utilized, and the problems that an existing formula has poor compressibility, tablet core hardness is poor, and the tablet split phenomenon happens in a conveying process are solved by optimizing the formula and a production technology.