The invention discloses a new method for preparing nopol, and relates to the nopol. A paraformaldehyde and Lewis acid catalyst is placed in a first closed reaction kettle, a beta-pinene and Lewis acidcatalyst is added into a second closed reaction kettle, the first closed reaction kettle and the second closed reaction kettle are connected through a pipe, the first closed reaction kettle is subjected to a depolymerization reaction under the condition of heating and stirring, and obtained gas formaldehyde is introduced into the second closed reaction kettle for a reaction through a pipe; the temperature of the first closed reaction kettle and the second closed reaction kettle is raised to 80-160 DEG C, the pressure is 0.1-0.5 MPa, the stirring speed is 100-300 r/min, and the reaction time is 5-15 h; after the reaction is finished, the temperature in the first closed reaction kettle and the second closed reaction kettle is lowered to the room temperature, a reaction product is subjectedto standing and layering, then materials are pressed out with nitrogen gas, and filtration is conducted after secondary static settlement to obtain the nopol.