A new Phalaenopsis cultivar SM 6310 was bred by Kyungpook National University, Korea. The new cultivar SM 6310, showing the phenotype of yellow colored mini type characteristics, was introduced by artificial crossing of Phalaenopsis ‘Brother Gold Miss’ and Phalaenopsis philippinensis. An elite individual number ‘03-06-31’ later named as ‘SM 6310’ was selected among 250 individual progenies for more than 2 years(2004-2005) intensive selection process covering excellent vegetative and flowering characteristics. In year 2006-2007, the 1st and 2nd characteristic analysis were performed through stability and uniformity test. The ‘SM 6310’ shows that flower color is bright clean yellow (RHS#:12B) and flower shape is small type with size of 5.8 and 6.1cm in flower length and width, respectively. ‘SM 6310’ is regarded as raceme flower type suitable small flower pot market. The leaf of ‘SM 6310’ is rowing horizontally and about 15.6cm in length and 7.1cm in width. This cultivar also possesses no genetic variation, fast invitro propagation and easy growing due to vigorous growth habit. This ‘SM 6310’ is registered (Reg.#:3825) to Korea Seed & Variety Service (KSVS) in 21 December, 2011 and PBR (plant breeder's right) is currently controlled by Sangmiwon Orchid Company, Korea.