截至2015年7月，西藏自治区人大及其常委会制定、批准地方性法规和作出具有法规性质的决议、决定共300件，其中现行有效的地方性法规123件，具有法规性质的决议、决定148件，废止29件，内容涉及政权建设、经济发展、社会稳定、文化教育、语言文字、文物保护、生态环保等各个方面。政协西藏自治区委员会，每年对自治区人民政府的《政府工作报告》《国民经济和社会发展计划报告》《财政预算报告》和自治区“两院”的工作报告进行协商讨论，先后组织委员参与西藏地方性法规(草案)的协商讨论，以全委会、常委会、主席会议、民主协商会议、专题座谈会议、委员视察、调研、提案及举办“经济发展论坛”等形式，为西藏自治区“八五”“九五”“十五”“十一五”“十二五”计划、规划的制定和实施提出意见和建议，代表西藏各界积极履行参政议政的职能。

　　中国民族区域自治法规定，上级国家机关的决议、决定、命令和指示，如有不适合民族自治地方实际情况的，自治机关可以报经该上级国家机关批准，变通执行或停止执行。如在执行全国性法定节假日的基础上，西藏自治机关还将“藏历新年”“雪顿节”等藏民族的传统节日列入自治区的节假日。根据西藏特殊的自然地理因素，西藏自治区将职工的周工作时间规定为35小时，比全国法定工作时间少5小时。1981年，西藏自治区人民代表大会常务委员会从西藏少数民族历史婚俗等实际情况出发，通过了《西藏自治区施行〈中华人民共和国婚姻法〉的变通条例》，将《婚姻法》规定的男女法定婚龄分别降低两岁，并规定对执行变通条例之前已经形成的一妻多夫和一夫多妻婚姻关系，凡不主动提出解除婚姻关系者，准予维持。结合西藏实际情况，自治区还先后制定实施了多项国家有关法律的变通条例和补充规定。其中包括《西藏自治区文物保护条例》《西藏自治区环境保护条例》《西藏自治区人民代表大会常务委员会关于严厉打击“赔命金”违法犯罪行为的决定》等多部地方法规。

By July 2015, the People's Congress of Tibet Autonomous Region and its Standing Committee had enacted and ratified 123 local regulations that are currently effective, made 148 resolutions and decisions that have the same legal standing as regulations, and 29 regulations, resolutions and decisions it ratified have been repealed. They total 300 in all, covering the building of political power, economic development, social stability, culture, education, language, protection of cultural relics, and environmental protection. Every year the Committee of Tibet Autonomous Region of the Chinese People's Political Consultative Conference discusses the work report, the economic and social development plan, and the financial budget report of the People's Government of Tibet Autonomous Region, and the work report of the Higher People's Court and the People's Procuratorate of Tibet Autonomous Region; organizes its members to participate in the consultation and discussion of Tibet's local regulations (draft); voices opinions and offers suggestions on the formulation and implementation of the Eighth, Ninth, 10th, 11th, and 12th Five-year Plans of Tibet Autonomous Region at plenary meetings, standing committee meetings, chairman's meetings, consultative conferences, special symposiums, or through member inspections and investigations, making proposals and convening "economic development forums." In this way, it exercises the functions of participating in the deliberation and administration of state affairs on behalf of all circles in Tibet.

According to the Law of the People's Republic of China on Regional Ethnic Autonomy, "If a resolution, decision, order or instruction of a state organ at a higher level does not suit the conditions in an ethnic autonomous area, the organ of self-government of the area may either implement it with certain alterations or cease implementing it after reporting to and receiving the approval of the state organ at a higher level." In addition to national holidays, for example, Tibet has also established other public holidays, mostly traditional Tibetan festivals such as the Tibetan New Year and Shoton Festival. Taking into consideration its special natural and geographical conditions, Tibet Autonomous Region applies 35 weekly working hours, five hours less than the national legal level. In 1981, after taking into consideration Tibet's history and folk customs, the Standing Committee of the People's Congress of Tibet Autonomous Region promulgated the Alternative Regulations of Tibet Autonomous Region on the Implementation of the Marriage Law of the People's Republic of China, in which the legal age of marriage for both men and women was reduced by two years relative to the Marriage Law of the People's Republic of China, and polyandrous and polygynous relationships that had existed before the regulations took effect would be allowed to continue if no one involved proposed dissolution. In light of the actual conditions in Tibet, the autonomous region enacted and implemented multiple alternative regulations and supplementary provisions on state laws, including the Regulations of Tibet Autonomous Region on the Protection of Cultural Relics, the Regulations of Tibet Autonomous Region on Environmental Protection, and the Decision of the Standing Committee of the People's Congress of Tibet Autonomous Region on Cracking Down on the Crime of Life Compensation.