Electronic component mounting system and electronic component mounting inspection method

An electronic component mounting system for mounting an electronic component on a board, the electronic component mounting system comprising:

• an imaging section configured to image a component inspection region of the board including the electronic component mounted on the board;
• a first component mounting state decision section configured to decide a mounting state of the electronic component based on an image captured by the imaging section by using a component mounting state decision device created by machine learning;
• a second component mounting state decision section provided separately from the first component mounting state decision section and configured to decide the mounting state of the electronic component based on the image;
• a component change detection section configured to detect whether a change has occurred in the electronic component to be mounted;
• and
• a decision section automatic switching section configured to, when the component change detection section detects the change in the electronic component, perform automatic switching from the first component mounting state decision section to the second component mounting state decision section and cause the second component mounting state decision section to decide the mounting state of the electronic component.