The pancake problem is the problem of stacking a large number of different sized pancakes on a plate. At this time, the smaller pancakes should be above the larger pancakes. The pancake graph originated from the problem of pancakes with n different sizes. The n-pancake graph has n! nodes. A node consists of a permutation of n natural numbers. It is possible for a node to flip from any symbol up to the top symbol. The half pancake graph and the pancake graph have a node number n! In the half pancake graph, The degree of the half pancake graph is about n/2 which reduces the degree of the pancake graph by half. Half pancakes have better results than star graphs or pancake graphs in terms of network cost, which is the degree×diameter. Hamiltonian characteristics are the basic algorithms used in multiprocessor algorithms such as fault tolerant routing algorithms, all-to-all broadcasting, one-to-all broadcasting, and data migration. In this paper, we analyze the path characteristics of a pancake graph and a half pancake graph, and derive Hamilton characteristics of a pancake graph and a half pancake graph using the results.