A sentiment threshold determining method and an artificial intelligence device configured for determining, based on obtained monitoring information, that a sentiment status of a first user is a first sentiment state, obtaining N actions of a second user, determining a first action based on a Q-value table, updating a Q value that corresponds to the first sentiment state and the first action in the Q-value table, determining whether an updated Q value is greater than a preset threshold. Finally, determining the sentiment threshold based on the monitoring information, and when the updated Q value is greater than a preset threshold, updating the sentiment status, or repeating the foregoing steps until the sentiment threshold is determined when the updated Q value is not greater than the preset threshold.