As reported, due to the interactions between the (Ba,Sr)TiO3(BST) thick films and substrates such as alumina, the sintering temperatures are limited and the obtained films are difficult to achieve full densification, thereby deteriorating their dielectric properties. In this paper, we aim to explore the possibility to improve the thick film surface's density by introducing a thin layer of nano-powders. The nano/micro/nano layered BaTiO3-based ((Ba,Sr)TiO3) powder compacts consisted of BST micro-powder layers sandwiched between two barium titanate (BT) nano-powder layers. The microstructure evolutions, especially nearby the interface, were examined via scanning electron microscopy and the effects of nano-particle layer on the microstructure of the micro-powder layers were investigated. The dielectric properties were measured at various temperatures. Experimental results showed that BST-layer's density was enhanced, especially under suitable sintering conditions, and their dielectric properties were adjusted. These results suggest casting a thin layer of nanometer particles on BST thick films will be an effective way to improve their density. (C) 2011 Elsevier B.V. All rights reserved.