Fruit quality of the grafted tomato plants (Lycopersicon esculentum Mill. cv. Hausumomotaro) on three rootstock cultivars ('Achilles-M', 'Helper-M' and 'LS-89') under sand culture was investigated. The incidence of dented fruits were low in any grafted tomato plant, whereas that of oval-shaped fruits were relatively high. Number of locules of fruit were almost the same among them in the early harvesting time, whereas those were different and increasing in later harvesting time. Brix of fruit was increasing in the later harvesting period, whereas that was 6-7% in the early times. These results indicate that grafting tomato plants do not show only relatively low abnormal and blossom-end rot of fruits but produce high brix fruit under sand culture.