If you are visiting Sweden on a business or conference trip and are a citizen of a non-EU country, you may need a visa. A visa is a permit to travel to and stay in a country for a limited period.
Malian citizens need a visa and citizens from the following countries/territories also require a visa when entering Sweden, check the list.
Within the framework of the Schengen cooperation regarding visas, Sweden is represented by the Embassy of Denmark in Bamako. Similarly, Sweden represents other Schengen states in a number of places. Here is a list of the countries and places where there are representations.
To apply for a visa to Sweden as a Malian citizen, please read more HERE
More information on how to apply for a visa for other citizens as well as general information is found on Swedish Migration Agency.