Abstract: A micro pump (10) is provided, wherein the micro pump (10) includes a housing main body (1), a housing upper part (3), a housing lower part (2) and at least one locking structure (4). The housing upper part (3) includes at least one inlet valve (1a) and at least one outlet valve (1b). The housing upper part (3) is separate from the housing main body (1). The housing lower part (2) is separate from the housing main body (1) and the housing upper part (3), wherein the housing main body (1) is arranged in a sandwich-like manner between the housing upper part (3) and the housing lower part (2), such that the housing upper part (3) is operatively coupled with the housing lower part (2) via the at least one locking structure (4).