The problems on hypothetical testing of scale and location parameter in a complex growth curve model are considered in this paper. Suppose the null hypotheses are as follows:①H1:∑=Ip(Ip is an identity matrix of order p);②H2:∑=Ip andξ:0(0 is a zero matrix of order q × m);③H3:∑=σ2Ip(σ2 is unknown positive number). It is derived that the likelihood tests of the null hypotheses Hi against above alternative hypotheses Ai≠Hi ( i = 1,2,3 ) are unbiased when ∑ is the form of block diagonal matrix in Section 2.