Medias report so much about China stock mania,especially people at work engaging in,which alerts us the collapse of stock market.And both of them move stock bubble towards the final collapse.There are two disadvantages which lead China stock market to economic bubble.To eliminate the bubbles,we must improve supplies of stock,put strict disciplines on eight-hour work,and make an end to China stock mania.With this serious situation on stock market,people should keep a clear mind and be well prepared about the collapse of stock bubbles.