diff --git a/datastructure/queue/arrayqueue.go b/datastructure/queue/arrayqueue.go
index b4f4df7..d6d2c22 100644
--- a/datastructure/queue/arrayqueue.go
+++ b/datastructure/queue/arrayqueue.go
@@ -43,6 +43,11 @@ func (q *ArrayQueue[T]) IsEmpty() bool {
 	return q.size == 0
 }
 
+// IsFull checks if queue is full or not
+func (q *ArrayQueue[T]) IsFull() bool {
+	return q.size == q.capacity
+}
+
 // Front return front value of queue
 func (q *ArrayQueue[T]) Front() T {
 	return q.items[0]
diff --git a/datastructure/queue/arrayqueue_test.go b/datastructure/queue/arrayqueue_test.go
index c3c461c..9ecc224 100644
--- a/datastructure/queue/arrayqueue_test.go
+++ b/datastructure/queue/arrayqueue_test.go
@@ -100,3 +100,14 @@ func TestArrayQueue_Clear(t *testing.T) {
 	assert.Equal(true, queue.IsEmpty())
 	assert.Equal(0, queue.Size())
 }
+
+func TestArrayQueue_IsFull(t *testing.T) {
+	assert := internal.NewAssert(t, "TestArrayQueue_IsFull")
+
+	queue := NewArrayQueue[int](3)
+	queue.Enqueue(1)
+	queue.Enqueue(2)
+	queue.Enqueue(3)
+
+	assert.Equal(true, queue.IsFull())
+}