Abstract: To study the hereditary law of ornamental characters of Phalaenopsis, and cultivate high-quality varieties, three pairs of reciprocal cross combinations are designed by using five red Phalaenopsis varieties as parents, and the main ornamental characters of hybrid offspring are observed and analyzed. The results showed that flower color, flower diameter, flower number, peduncle height and crown width presented obvious segregation in hybrid offspring. (1) The red color and flower diameter had gradient change, and the genetic regularity of these characters between orthogonal and reciprocal cross was different. When the female parent had deeper flower color and larger flower diameter, the probabilities of offspring with deep color and large flower diameters were higher. (2) The number of flowers in hybrid offspring showed a normal distribution, and the reciprocal cross offspring in the same combination showed significant differences. (3) The crowns of different combinations showed a certain degree of decline. The results preliminarily clarify the separation performance of major ornamental characters in red Phalaenopsis hybrids offspring, and provide references for parents selection and new varieties breeding.