An archaeological survey was conducted in 2004-2005 in the middle of Mianab Shushtar in Khuzestan, followed by an excavation there in 2005-2006, which led to the discovery of a Sasanian palace as well as valuable stuccoes at two other locations, namely the JilJilak Tepe and behind a Gas Station on the Shushtar-Ahwaz Road. In this article, the discovered stuccoes have been examined, which indicates that the Jiljilak stuccoes can be divided into three categories based on their features and application: a) geometric patterns, b) plant patterns, and c) animal patterns. Comparing these stuccoes with those found elsewhere such as Kuh-e Khwaja, Bīshāpūr, and Bandian in Dargaz shows that they can be attributed to the Parthian-Sasanian period.