Abstract: ‘Guifenlong 4’is a new pitaya cultivar bred from a cross between maternal parent‘Dilong’and paternal parent‘Nanning Bairou-3’. The fruits have a high sweetness,with a soluble solids content（SSC）of approximately 22% in the core and 14.7% in the whole fruit. The flesh is fine and smooth in texture with a refreshing sweetness and tends to be juicy. Under natural cultivation conditions,it produces 8-9 batches of fruit annually. The first batch ripens in July,and the final batch matures in December. The average yield is approximately 43 734 kg · hm^-2. It is suitable for cultivation in tropical and subtropical regions such as Guangxi,Guangdong,Hainan,Yunnan,Fujian,and Taiwan,China.

Key words: pitaya, hybridization, cultivar