The invention relates to a rape pollen soft capsule and a method for preparing the same. The content of the soft capsule consists of a rape pollen extract and an auxiliary material, wherein the rape pollen extract is a mixture of a fat-soluble extract and a water-soluble extract of rape pollen; the auxiliary material consists of a diluent, an antioxidant, a suspending agent and an emulsifier; based on a standard capsule, a liquid medicine in each capsule contains 0.1 to 0.6 gram of the extract, 0.1 to 0.4 gram of the diluent, 0.02 to 0.06 gram of the emulsifier, 0.02 to 0.04 gram of the suspending agent and proper amount of the antioxidant; and the method comprises the steps of pouring the liquid medicine into a soft capsule machine, pelleting, shaping, cleaning the capsule, and drying the capsule in a drying room to obtain the rape pollen soft capsule. The rape pollen soft capsule has the effect of tonifying the kidney and consolidating vital essential and is applied to preventing and treating kidney qi instability, soreness and weakness of waist and knees, insufficient micturition or incontinence, chronic prostatitis and prostate hyperplasia. Compared with the prior dosage forms of Prostate-Health and PuLeAn tablet, the rape pollen soft capsule has the advantages of obviously reducing the dose for a patient, improving the curative effect and the bioavailability of the medicament and the like.