A board production monitoring device for monitoring a production state of a board production device which produces a board on which multiple electronic components are mounted, the device comprising: a database section configured to consecutively obtain and store production state data (Ds) related to the production state from the board production device (91, 92, 93); a transition graph display section configured to display a transition graph (Gt) showing a time-series change at least at a part of the production state data stored in the database section; a condition change input section (52, 53) configured to input condition change data (Dc) which is condition change data showing a change point of a production condition of the board production device and includes generation time information of the change point; a condition change display section configured to display at least the generation time information of the change point of the condition change data, at a time-series corresponding position in the transition graph, wherein an operation of an operator is included in the change point of the production condition of the board production device, and information of finish time of the operation is used as the generation time information of the change point, wherein the operation of the operator includes an improvement procedure operation performed for improving the production state with reference to time-series deterioration of the production state data shown in the transition graph; characterised in that the device further comprises a procedure analysis section configured to analyze effectiveness of the improvement procedure operation, based on a relationship between the condition change data when the operator performs the improvement procedure operation, and the transition graph including a time slot before and after the generation time information of the change point of the condition change data. a database section configured to consecutively obtain and store production state data (Ds) related to the production state from the board production device (91, 92, 93); a transition graph display section configured to display a transition graph (Gt) showing a time-series change at least at a part of the production state data stored in the database section; a condition change input section (52, 53) configured to input condition change data (Dc) which is condition change data showing a change point of a production condition of the board production device and includes generation time information of the change point; a condition change display section configured to display at least the generation time information of the change point of the condition change data, at a time-series corresponding position in the transition graph, wherein an operation of an operator is included in the change point of the production condition of the board production device, and information of finish time of the operation is used as the generation time information of the change point, wherein the operation of the operator includes an improvement procedure operation performed for improving the production state with reference to time-series deterioration of the production state data shown in the transition graph; characterised in that the device further comprises a procedure analysis section configured to analyze effectiveness of the improvement procedure operation, based on a relationship between the condition change data when the operator performs the improvement procedure operation, and the transition graph including a time slot before and after the generation time information of the change point of the condition change data.