The invention relates to an anti-common cold capsule preparation method, which comprises: taking honeysuckle, red peony root and dryopteris crassirhizoma, feeding the materials according to a certain ratio, adding water, decocting twice, filtering, mixing the filtrates, concentrating to obtain a clear paste with a relative density of 1.18-1.22, adding ethanol to achieve an ethanol alcohol content of 50-70%, uniformly stirring, standing to obtain a supernatant, filtering, recovering ethanol from the filtrate, concentrating to obtain an extract with a relative density of 1.18-1.22, standing the extract through a macroporous absorption resin, collecting the eluent, concentrating to obtain a thick paste with a relative density of 1.22-1.24, adding starch to the thick paste, uniformly mixing to obtain a mixture, placing the mixture into a vacuum dry box to dry to obtain a honeycomb dry paste with loose texture, crushing the dry paste, screening to obtain coarse powder, adding magnesium stearate to the coarse powder, uniformly mixing, and filling into a hollow capsule to obtain the anti-common cold capsule. According to the present invention, stability of the product can not be affected, energy source consumption can be reduced, the dried dry paste has the loose texture so as to be easily collected, crushed and screened, and no moisture absorption phenomenon is generated when filling the coarse powder into the hollow capsule.