Flow rate adjustment tool and adjustment method.

An object of the present invention is to provide a flow rate adjustment tool and an adjustment method that are tools for pouring granular members such as color sand and color beads along an inner wall surface of an ornamental container and can adjust an amount of outflow of the granular members. The flow rate adjustment tool is composed of a container including a bag-like container, and includes a discharge part 12 for discharging the particulate member filled in the filling part 11, the discharge part 12 including an opening 121 that is an opening including at least one end of the flow rate adjustment tool, And an adjustment part 122 that is a surface forming the opening 121 and adjusts opening/closing of the opening 121, the adjustment part 122 having flexibility or mobility, and being a holding direction when holding the adjustment part 122, The opening 121 is closed...