The invention provides a rapid extraction method of radix aconite lateralis preparata total alkaloids. The method comprises the steps that 1, pulping is conducted on cleaned fresh radix aconite lateralis preparata through a total alkaloid extracting solution, slurry-residue separation is conducted, pulping is repeatedly conducted on coarse residues, and residues and slurry are obtained; 2, solid-liquid separation is conducted on the slurry obtained in the first step, and starch and clear liquid are obtained; 3, the starch obtained in the second step and the residues obtained in the first step are cleaned through clean water for multiple times, dehydration is conducted, and cleaning fluid is obtained; 4, part clear liquid obtained through separation in the second step and the cleaning fluid obtained in the third step are combined and serve as the total alkaloid extracting solution for reutilization by returning to the first step; 5, protein is removed for the residual obtained clear liquid, and pH is regulated; 6, the clear liquid regulating the pH in the fifth step is used for a macroporous resin column, purification is conducted through distilled water, elution is conducted through ethyl alcohol, and after solvent is distilled through eluant, the radix aconite lateralis preparata total alkaloids are obtained. According the rapid extraction method of the radix aconite lateralis preparata total alkaloids, dosage of the extracting solution is saved, and the extracting time is shortened.