High Temperature Expansion for the Ising Model on the Dual Penrose Lattice High temperature expansion for ln Z(Z : the partition function in the absence of a magnetic field) of the Ising model on the dual Penrose lattice is discussed. The terms up to w^{10} are derived by using projection method. The critical compressibility factor Zc and the average correlation function C are calculated in terms of duality relation. The final results are Zc = 0.0846 +0.007 and C= 0.7403+0.0024, which are confirmed by the expansion. Lattice constants are shown in some tables. 
