以提供核 - 壳颗粒，甚至当反应溶液浓度越高能够稳定地制造良好的形状的空心颗粒的方法。 分散介质和芯粒子，金属氧化物的前体，其中所述0.01-0.25摩尔配位剂与金属1个摩尔前体，将含有反应溶液中，该前体的水解和 通过脱水缩合反应，具有形成包含核粒子的表面上的金属氧化物的被覆层的工序核 - 壳粒子的制造方法。 和加热所得核 - 壳粒子，方法用于产生具有分解的工序中空颗粒和除去所述芯颗粒。

To provide a method of a core-shell particles or hollow particles of good shape, even if the concentration of the reaction solution high can be produced in a stable manner.
A dispersion medium, and the core particles, a precursor of a metal oxide, a reaction solution containing, and 0.01 to 0.25 moles of complexing agent to metal 1 mole of the precursor, the precursor the by hydrolysis and dehydration condensation reaction method for producing core-shell particles comprising forming a coating layer made of the metal oxide on the surface of the core particle. And heating the resultant core-shell particles, the manufacturing method of hollow particles having a step of decomposing and removing said core particles.