The invention belongs to the technical field of food processing, particularly relates to chicken oil-based shortening, and to a preparation method for the shortening. The preparation method mainly comprises the following steps: melting chicken oil fractionation solid lipid, mixed base material oil and an emulsifier for 15 to 30 minutes at the temperature of 60 to 80 DEG C, and homogenizing the mixture by adopting an ultrasonic homogenization technology, wherein the frequency is 18 to 30 kHz, and the time is 5 to 20 minutes; performing two-stage high-pressure rapid solidification treatment under the nitrogen gas pressure of 100 to 150 MPa; first, cooling to 40 to 46 DEG C within 2 to 8 minutes, and then cooling to 15 to 28 DEG C within 5 minutes; under the same nitrogen gas pressure, kneading the homogeneous mixture which is subjected to the rapid solidification treatment in the mixing rate of 100 to 1000 r/min, and maturating the homogeneous mixture in a constant temperature and humidity warehouse in dark to obtain the shortening. The overall processing process of the chicken oil-based shortening is in nitrogen environment; the prepared shortening does not contain sand grains, and has excellent plasticity and emulsifying property.