這個故事主要在描寫在Arthur的媽媽要他整理房間, 於是他決定來辦一個拍賣會來出清他的舊玩具跟書, 結果如何呢? Arthur 真的能將房間整理得很乾淨嗎 ? 或是換來了另一堆新的玩具呢?Marc Brown的作品都非常適合初學者閱讀。內容簡單而有趣。在這一系列的書中都還附有二張貼紙喔。可以讓小朋友一面學英文一面透過遊戲的方式認字呢！
When Arthur's mother orders him to get rid of some of the old junk cluttering his room, Arthur decides to have a garage sale. But when his first customer, Buster, doesn't have enough money for the toy he wants, a trade is worked out. Soon word spreads that Arthur has great stuff to trade, and by the end of the day, Arthur has gotten rid of all his old junk. His mother is pleased, until she finds out that D.W. is in business too—renting out her room to store all of Arthur's new junk! Arthur, Clean Your Room! Comes complete with a page of peel-off stickers to place on words throughout the book and another page of colorful garden stickers to get new readers started writing and illustrating their very own stories about Arthur and D.W.