As a new type of space fuel, ADN (ammonium dinitramide) has attracted people′s attention for its green, environmental protection and high energy characteristics. As a new micro propulsion method, laser propulsion has the advantages of small thrust and adjustable in a certain range. In this paper, ADN is used as working medium to study the relationship between ADN absorption rate and propulsion performance in laser propulsion. Infrared dye was used as light absorbing material, and the absorption rate of working medium was controlled by changing its ratio. Laser ablation was carried out in a microablative chamber (about 5.33nL) to study the change of its propulsion performance and observe the evolution process of plume. The results show that there is no impulse between pure ADN solution and 0%ADN solution, 20%ADN has better propulsion performance, and the maximum impulse is 6.02 μN/s, and the atomization degree of droplets produced by 20%ADN solution is higher. Therefore, it is concluded that with the increase of ADN absorption rate, its propulsive performance also presents an upward trend.