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Based on the rotating rate of planetary frame of 110 r/min, the pressure of liquid pump of 0.3 MPa, the diameter of valve core hole of distributor of 3 mm, the diameter of spraying-fertilizer needle nozzle of 2 mm, the working processes of pricking hole and spraying fertilizer of pricking hole mechanism were shot by high-speed camera. The movement laws of pricking hole and spraying fertilizer were analyzed by high-speed camera techniques and image processing technology, which showed that the fertilization time was 0.1 s from spraying-fertilizer needle went into the soil and began spraying fertilizer to it went out of the soil and stopped spraying fertilizer, the fertilization loss rate was 0.48%, the change of real trajectory width was 256 mm, and the change of height was 502 mm. The results showed that the processes of pricking hole and spraying fertilizer of pricking hole mechanism had good synchronicities, and fertilization loss rate was far less than the operation requirement 3.5%.