Abstract: ‘Xiyu 1’is a new celery cultivar which is bred by maternal selection method from progeny of two Japanese cultivars JC-1 and white celery crossed. The plant is 75 cm tall. Its petiole is yellow-green. The lengh of the petiole is 40 cm，the width is 2.3 cm，the thickness of the central cross section is 1 cm. The back strip of the stem is 10，and the vascular bundle is 12. The protein content is 2.0%，the sugar content is 1.9%，the vitamin C content is 0.67 mg · kg-1，the fiber content is 0.57%. It has excelent taste. The growth period of the cultivar is 80 days. The plant grow fast. It can be harvested after 60 days from transplanting. The yield is up to 130 t · hm-2，and the weight of a plant is 2 kg. The winter adaptability is strong.

Key words: celery, cultivar