In this paper,the changes of weight,peel thickness,hardness,soluble solid content in center and edge and vitamin C content of small red flesh watermelon'L600'and'Jingying'cultivated in Beijing area with the extension of storage time were studied to analyze the suitable storage period of different varieties.The results showed that when stored at room temperature 26℃,the storage time of'L600'watermelon with hard and crisp fruit was about 15 d longer than that of'Jingying'watermelon with crisp fruit.After 45 d of storage,the soluble solid content of'L600'fruit decreased more,but the content was higher than that of'Jingying'fruit.During the whole storage period,the average Vc content and peel hardness of'L600'were higher than that of'Jingying'.