Buying and selling sand is illegal, suspected of illegal operation and violating state regulations. Crime of having one of the following illegal business operations:

1. dealing in licensed, franchised or other goods with restricted trading as stipulated by laws and administrative regulations without permission;

2. Buying and selling business licenses or approval documents stipulated by laws and administrative regulations such as import and export licenses and import and export certificates of origin;

3, without the approval of the relevant competent departments of the state, illegally engaged in securities, futures or insurance business, or illegally engaged in fund settlement business;

4, engaged in other illegal business activities, disrupting market order, if the circumstances are serious.

Whether it is illegal to buy or sell illegally exploited river sand depends on the business amount:

1, the amount of illegal business operation by individuals is more than 50,000 yuan, and the amount of illegal business operation by units is more than150,000 yuan;

2, the illegal income of individuals in more than twenty thousand yuan, the illegal income of units in more than fifty thousand yuan.