While doing a good job in management, as a legal aid lawyer, he undertook a large number of civil and criminal cases. Individuals handle more than 20 cases of legal aid every year, and since 1999, they have handled 2 cases of legal aid10. In addition, he was also in charge of nearly 200 cases, including 70 cases, such as A Zi's heroic disability case, 17 household demolition and resettlement compensation dispute case and father's lawsuit against eight children for alimony, which achieved remarkable social benefits. In the daily work of lawyers, Dong Chen organized lawyers from the Legal Aid Center to carry out various legal aid activities, such as the "Legal Aid Love Card" activity, which has been distributed to the disabled who receive the minimum living guarantee in the city. With this card, they can get legal aid services in priority in all legal aid institutions in the city without review; Another example is the "sending to the French construction site" activity. In view of the increasing demand for legal aid for migrant workers, lawyers are sent to various construction sites to distribute legal aid materials to explain the legal awareness of disputes to migrant workers.
While handling cases, he paid attention to serious summary and accumulation, and published many papers in magazines such as Xinjiang Lawyer and Xinjiang Justice in recent years. For example, grassroots legal workers and lawyers should not practice on an equal footing, and investigation on the current situation of migrant workers' rights protection in Urumqi. Among them, the investigation report on the current situation of legal aid in Urumqi was adopted by the Political and Legal Committee of Urumqi, published in Urumqi Political and Legal News, and distributed to various political and legal organs in Urumqi, providing a strong basis for relevant leaders to make decisions.