The invention discloses a crystal form A of higenamine hydrochloride and a preparation method thereof. The crystal form A of the higenamine hydrochloride has an X-ray powder diffraction spectrogram shown in Figure 1; the preparation method of the crystal form A of the higenamine hydrochloride adopts a phased temperature-controlling crystallizing method. The crystal form A of the higenamine hydrochloride has the advantages that the purity is high, the stability is good, the safety in medicine administration is high, the suitability of the preparation is good, and the like; the valid period of the higenamine hydrochloride medicine is favorably prolonged.