The invention discloses N-benzyl-acridone, derivatives of the N-benzyl-acridone and preparation methods and application of the N-benzyl-acridone and the derivatives. A structural formula of a compound is shown as a formula (I), wherein R1, R2, R3, R4 and R5 are all randomly selected from the following substituent groups: H, OH, NH2, Cl, F, Br, I, CN, NO2, CH3, OCH2Ph and O(CH2)nCH3; n in O(CH2)nCH3 is an integer in the range of 0 to 3; Z is randomly selected from the following substituent groups: CH2 and SO2; A is randomly selected form the following substituent groups: S, O and NH; R6, R7, R8, R9, R10, R11, R12 and R13 are all randomly selected from the following substituent groups: H, OH, NH2, Cl, F, Br, I, CN, NO2, CH3 and the following a and b; necessarily, only one substituent group of the R6, the R7, the R8, the R9, the R10, the R11, the R12 and the R13 is a or b; a represents NHCO(CH2)nR or CONH(CH2)nR, wherein n is an integer in the range of 0 to 3 and R represents tertiary amine; and b represents NHCOBNH2 or CONHBNH2, wherein B is an alkyl connection chain or an alkyl connection chain substituted heteroatom. A cell proliferation inhibition test result shows that the compound in the formula I can better inhibit cancer cell CCRF-CEM from growing, wherein part of compounds show higher activities than a parent compound (10-(3,5-dimethoxyphenyl) acridone). (the formula I).