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The critical behaviour of the O(n)-symmetric model with two n-vector fieldsis studied within the field-theoretical renormalization group approach in aD=4-2 epsilon expansion. Depending on the coupling constants thebeta-functions, fixed points and critical exponents are calculated up to theone- and two-loop order, resp. (eta in two- and three-loop order). Continuouslines of fixed points and O(n)*O(2) invariant discrete solutions were found.Apart from already known fixed points two new ones were found. One agrees inone-loop order with a known fixed point, but differs from it in two-loop order.

Critical Behavior of a General O(n)-symmetric Model of two n-Vector Fields in D=4-2 epsilon