Projection lamp capable of creating floating or fluttering-like effect

A projection lamp capable of creating a floating or fluttering-like effect, comprising a housing (1), a front cover (2), a core assembly (3), and a film disk assembly (4), wherein the core assembly (3) is installed inside the housing (1), the front cover (2) covers one end of the housing (1), a first glass sheet (202) is arranged in a middle portion of the front cover (2), the core assembly (3) comprises a third-lens bracket (301), a third lens (302), a water ripple sheet (303), a cover plate (304), a film holder (305), a second lens (306), a first lens (307), a travel switch (308), a lamp board bracket (309), a lamp board (310), a motor (311), a control board (312), and the film disk assembly (4), the third lens (302) and the water ripple sheet (303) are sequentially installed from left to right in a middle portion of the third-lens bracket (301), legs of the third-lens bracket (301) are inserted and connected into a surface of the lamp board (310), the lamp board bracket (309) is installed on one side of the lamp board (310), the control board (312) is installed on an other side of the lamp board (310), the travel switch (308) is installed on one side of the lamp board bracket (309), the first lens (307) is installed inside the lamp board bracket (309), a bottom of the lamp board bracket (309) is fixedly connected to an output end of the motor (311), the film holder (305) is installed in a middle portion of the lamp board bracket (309), the second lens (306) is installed inside the film holder (305), the cover plate (304) is arranged on one side of the film holder (305), and the film disk assembly (4) is inserted between the film holder (305) and the cover plate (304).