PURPOSE: An electronic component module is provided to improve the performance of the module by shielding electromagnetic waves from the outside using a second shield layer. CONSTITUTION: A substrate(10) has at least one cavity(19) inside. Two or more electronic components(20) are laminated in the cavity. A first shield layer(13a) is arranged between two electronic components. The first shield layer partitions the cavity. A second shield layer(13b) is arranged in the entrance of the cavity.
