The invention discloses a method for rapidly growing and cultivating dendrobium officinale, which comprises the following steps of: taking back mature shadow fruit seeds in the country of origin for wild dendrobium officinale, and placing the seeds in a clean culture dish; after natural crack, pouring the seeds into a clean beaker, sealing the clean beaker, and storing the beaker in a low temperature box; performing a certain sterilization procedure on the stored seeds, placing the seeds in an MS minimal medium, performing seed germination cultivation, wherein the seeds gradually become green and form protocorm, and observing that needles appear in the protocorm by using magnifying glass; transferring the protocorm into the MS minimal medium, performing protocorm proliferation and differentiation culture, observing that plantlets are differentiated from the protocorm in a bottle along the production of partial new protocorm; and transferring the plantlets into the MS minimal medium, and performing strong seedling and rooting culture, seedling hardening and transplanting. The survival rate is over 97 percent without the seedling hardening process, and the yield is doubled. The growth speed is improved by 50 percent, the content of each component is equivalent to that of the wild dendrobium officinale, and the contents of amino acid and microelement are higher than those of the wild dendrobium officinale.