An article sorting apparatus comprising: a conveyance path extending in a first conveyance direction; at least one conveyance unit including a belt that forms a load surface on which an article is placed and a driving portion for driving the belt, the conveyance unit being configured to move along the conveyance path and to convey the article placed on the load surface in a second conveyance direction that intersects the first conveyance direction; a loading portion configured to load the article onto the load surface of the at least one conveyance unit; a sorting portion configured to sort the article received from the at least one conveyance unit; a weight information detector (69, 91, 92, 93 or 94) configured to detect weight information correlated with a weight of the article that is transferred from the loading portion onto the load surface; and a controller configured to control driving of the driving portion in accordance with the weight information detected by the weight information detector (69, 91, 92, 93 or 94), thereby transferring the article placed on the load surface to the sorting portion, characterized in that during transfer of the article placed on the load surface to the sorting portion, the controller is configured to advance a driving start timing of the driving portion such that the larger the weight of the article is, the more the driving start timing is advanced, the weight of the article being obtained from the weight information, or to delay the driving start timing such that the smaller the weight of the article is, the more the driving start timing is delayed, the weight of the article being obtained from the weight information. a conveyance path extending in a first conveyance direction; at least one conveyance unit including a belt that forms a load surface on which an article is placed and a driving portion for driving the belt, the conveyance unit being configured to move along the conveyance path and to convey the article placed on the load surface in a second conveyance direction that intersects the first conveyance direction; a loading portion configured to load the article onto the load surface of the at least one conveyance unit; a sorting portion configured to sort the article received from the at least one conveyance unit; a weight information detector (69, 91, 92, 93 or 94) configured to detect weight information correlated with a weight of the article that is transferred from the loading portion onto the load surface; and a controller configured to control driving of the driving portion in accordance with the weight information detected by the weight information detector (69, 91, 92, 93 or 94), thereby transferring the article placed on the load surface to the sorting portion, characterized in that during transfer of the article placed on the load surface to the sorting portion, the controller is configured to advance a driving start timing of the driving portion such that the larger the weight of the article is, the more the driving start timing is advanced, the weight of the article being obtained from the weight information, or to delay the driving start timing such that the smaller the weight of the article is, the more the driving start timing is delayed, the weight of the article being obtained from the weight information.