Taking 0—100 cm soils from the farmlands (not reclamation formation) and reclamation areas of 1, 2, 3, 4, 7, 8, 9 years old in the Yellow River Delta as study objects, the spatiotemporal distribution and stoichiometry characteristics were analyzed through analyzing the soil organic carbon (SOC), nitrogen (TN), and phosphorus (TP), meanwhile the soil physiochemical and enzyme activities properties were exanimated and the C, N, and P storage were calculated. The results showed that the average values of SOC and TN in different soils of reclamation years were lower than the national average level. The TP level was lower than the national average level in the reclamation soil of 1 and 2 years, and was the same or slightly higher than the national average level in the reclamation soil of 3, 4, 7, 8, and 9 years. With the increasing of the reclamation years, the content of SOC, TN, and N/P decreased firstly and then increased, but C/N increased firstly and then decreased, C/P showed increasing trends after 7 years of reclamation, C, N, and P storage were increasing in 0—20 cm soil layer of different reclamation years, while the change rule of TP was fluctuating. With the increase of soil depth, the content of TP and TN, except in the first year, after reclamation increased firstly and then decreased in soil profiles, C/N increased and N/P decreased, the SOC contents and C/N showed significant vertical variation in the 0—40 cm soil layer. The values of SOC, TN, and TP showed significant negative correlations with soil conductivity and extremely significant or significant positively correlations with soil urease, alkaline phosphate, and invertase activity in 0—20 cm and 20—40 cm soil layer. C storage was extremely significantly correlated with C/N and C/P. The correlation analysis also showed that soil SOC and TN were the main factors regulating the soil eco-stoichiometry ratio of reclamation soils.