Eremias argus often produces two clutches per breeding season in Chuzhou, Anhui Province, with females laying 2 to 5 eggs per clutch. Clutch size and clutch mass was positively correlated to female size (SVL); relative clutch mass was independent of female size; egg was independent of clutch size. There was no inter-clutch difference in clutch size, clutch mass and egg mass. Egg length was positively correlated to egg width. Egg length was negatively correlated to clutch size; and egg width was independent of clutch size. Females increased reproductive output mainly through increasing clutch size.