Abstract: In this paper, energy value analysis and new energy index for sustainable development (EISD) were used to evaluate three different dike-pond agro-ecological engineering modes in Sanshui city of Pearl River Delta in system and subsystem levels.The result showed that mode Ⅲ was the best in its sustainable development ability.The EISD of mode Ⅲ was 58.3% and 29.7% higher than that of modes Ⅰ and Ⅱ .With a higher economic benefit and higher environmental loading, the planting subsystem had the lowest sustainability.Although the economic benefit of stock raising subsystem was not high, its indirect benefit was higher.With a higher economic benefit and a lower environmental loading, fishing subsystem had the highest sustainability.