In order to explore the main factors affecting the horizontal deflection angle of axial movement of an ovoid object, the effects of basic characteristics and device operating parameters on the horizontal deflection angle of ovoid objects (aluminum ovoid object, plastic ovoid object, chicken egg, and duck egg) were studied. The results showed that when the center distance of conveyor rollers was fixed, the horizontal deflection angle of four ovoid objects had a positive linear correlation with the diameter of conveyor rollers and the coefficient of determination was above 0.950. When the spacing of conveyor rollers was fixed, the horizontal deflection angle of four ovoid objects had a negative linear correlation with the diameter of conveyor rollers and the determination coefficient was above 0.900. The horizontal deflection angle of four ovoid objects had a negative linear correlation with the spacing of convey rollers, and the determination coefficient was above 0.900. The linear speed of conveyor roller rotation had no significant effect on the horizontal deflection angle of ovoid objects. The value of J/L had a negative linear correlation with the horizontal deflection angle of ovoid objects and the determination coefficient was 0.985. The obliquity of ovoid objects had a negative linear correlation with the horizontal deflection angle and the determination coefficient was above 0.850. The optimal operating parameters obtained from the test were as follows: the diameter of conveyor rollers: Φ40 mm; the spacing of conveyor rollers: 15-25 mm; the linear speed of the conveyor roller rotation: 50~70 mm/s.