Pouring spout of container

A pouring spout of a container, comprising:

• a spout main body including
• a tubular pouring part having an inflow port that allows contents to flow in from a container main body and an outflow port that allows the contents to flow out from the tubular pouring part, and
• an attached part attached to the tubular pouring part such that the inflow port is to be attached to the container main body;
• a closing member which is a separate body from the tubular pouring part and fitted to an inner circumferential surface of the tubular pouring part such that the inflow port is openable and closable;
• and
• an energizing body comprising a holding body attached to the attached part of the spout main body, and at least one spring member attached to the holding body and connecting the holding body and the closing member, the at least one spring member configured to apply a pressing force to the closing member from a side of the container main body toward the inflow port and close the inflow port by the closing member,
• wherein the closing member is removable from the inner circumferential surface of the tubular pouring part by an external force applied against the pressing force by the energizing body, and
• the attached part, the holding body, and the at least one spring member are formed as an integrated object made from a same material by injection molding.