近日，国际计量局（BIPM）和国际法制计量组织（OIML）共同确定2026年“世界计量日”全球主题为“Metrology:Building Trust in Policy Making”，中文主题为“计量：建立信任的基石”。

精准可靠的计量数据，是决策者制定政策应对各类复杂挑战的重要依据。无论是守护公众健康、保障公共安全，还是开展环境监测、贸易交接，都离不开精准的计量数据，只有当计量数据准确、可靠且可比较，决策才能更清晰、更科学，为社会公众所信任。

为此，国际计量局（BIPM）局长安妮特·古和国际法制计量局（BIML）局长安东尼·唐纳伦，围绕2026年“世界计量日”全球主题发表联合致辞，倡议加强计量国际合作，推动全球测量结果可信可比，为科学决策提供精准可靠的计量数据信任基石。

市场监管总局将于5月20日在河南省郑州市举办2026年“世界计量日”主题活动。

BIPM Director, Dr Annettr Koo and BIML Director, Anthony Donnellan Directors’ Message on World Metrology Day 2026

Each year, World Metrology Day offers an opportunity to reflect on the essential role measurement plays in society — and on the cooperation that allows measurements to be trusted, compared and relied upon world-wide.

Following a landmark year celebrating 150 years of the Metre Convention, World Metrology Day 2026 invites us to look forward. This year’s theme, Metrology: building trust in policy making, speaks directly to the relationship between science, governance and public confidence, and to the quiet work that enables decisions to be made with assurance.

Why measurement matters for building trust in policy making

Reliable measurements provide the evidence policymakers depend on when addressing complex challenges — from protecting public health and ensuring safety, to managing energy systems, monitoring the environment and supporting everyday market transactions. When data is accurate, comparable and traceable, decisions can be taken with greater clarity and confidence.

Trust is strengthened further when measurements are not only scientifically sound, but also applied within clear and predictable legal frameworks. Scientific metrology ensures that measurements are accurate and comparable across borders; legal metrology ensures that they are applied consistently and fairly in practice. Together, they help translate policy objectives into practical provisions that serve the public interest.

From measurement to policy in practice

The impact of metrology on policy can be seen clearly in areas such as healthcare. During the COVID-19 pandemic, for example, metrology laboratories around the world worked to support reliable measurements for testing, protective equipment and vaccine development. Comparable and traceable data enabled health authorities to assess risks, evaluate performance and act on evidence at a critical moment.

Similarly, long-term environmental monitoring relies on trusted measurements. Internationally comparable measurements of atmospheric gases, water quality and pollutants underpin the data used by authorities to track trends over time and to design policies that protect health and natural resources. Without confidence in how these measurements are made and compared, such decisions would lack a stable foundation.

Metrology also underpins quality assurance and fair market practices. In food safety, for example, metrology programmes have strengthened countries’ ability to measure contaminants, residues and nutritional content, helping authorities and producers demonstrate that products meet agreed specifications.

In parallel, legal metrology frameworks help ensure that measuring instruments used in commerce, such as fuel dispensers, water meters and electricity meters, perform as expected. When instruments are subject to appropriate legal control, trust is strengthened not only between producers and consumers, but also between public authorities and the communities they serve.

Trust built through cooperation

Ultimately, metrology underpins the evidence that informs policy, the frameworks that protect society, and support economic and social stability. When measurements are reliable and consistently applied, trust extends beyond data — to the institutions, agreements and decisions that rely on them.

This World Metrology Day we invite the global metrology community to reflect on the role trusted measurements play in shaping decisions, and to recognise the cooperation and shared commitment that make this trust possible.

We look forward to celebrating with you all, on 20 May!

国际计量局局长安妮特·古和国际法制计量局局长安东尼·唐纳伦2026年世界计量日联合致辞

每年，“世界计量日”都为我们提供了审视计量在社会发展中的关键作用的契机，以及推动全球测量结果可信可比、广泛可靠的国际合作。

在纪念《米制公约》签署150周年这一里程碑之年过后，2026年世界计量日继续引领我们放眼未来。本年度主题“计量：建立信任的基石”，直接阐明了科学、治理与公信力之间的内在关联，也彰显了计量领域默默耕耘、为科学决策提供坚实支撑。

测量何以成为建立信任的基石

可靠的测量数据，是政策制定者应对各类复杂挑战的依据，无论是守护公众健康、保障公共安全，还是统筹能源系统、开展环境监测、维护日常市场交易，都离不开精准计量。当数据准确、可比且可溯源，决策方能更清晰、更可信赖。

测量不仅要具有科学严谨性，更需在清晰、规范的法律框架下实施，才能进一步夯实信任根基。科学计量保障测量结果准确、跨境可比；法制计量确保测量在实践中统一公正实施。二者协同发力，推动政策目标转化为惠及公共利益的务实举措。

测量在制定政策中的实践

计量对政策的影响，在医疗健康等领域尤为凸显。例如新冠疫情期间，全球各国计量实验室通力协作，为病毒检测、防护装备及疫苗研发提供可靠测量支撑。依靠可比、可溯源的测量数据，政府卫生健康部门能够在关键时期研判风险、评估成效、科学施策。

同样，长期环境监测亦依赖可信的测量数据。基于国际可比的大气、水质及污染物监测数据，各国政府部门能够有效研判长期态势，为制定保障公众健康、守护自然资源的政策奠定坚实基础。若对测量方法与数据比对缺乏信心，相关决策将失去稳固根基。

计量亦是质量保障与市场公平交易的重要支撑。以食品安全为例，计量体系有效提升了各国对食品污染物、残留物质及营养成分的检测能力，帮助政府监管部门和生产企业证明产品符合既定的标准规范。

与此同时，法制计量框架为加油机、水表、电表等商用计量器具的准确可靠运行提供保障。计量器具依法依规接受监管，既能有效增进经营者与消费者之间的互信，也能进一步提升公众对政府部门的信赖与认可。

以合作凝聚信任

归根结底，计量为政策制定提供科学依据，为社会治理构建制度保障，并支撑经济社会稳定。当测量结果可靠、应用规范统一，信任便会超越数据本身，延伸至依托测量数据的各类机构、各项协议与各类决策之中。

值此世界计量日之际，我们诚邀全球计量界同仁，深刻审视可信的测量在科学决策中的重要作用，并使得这一信任成为可能的合作和共同承诺。

期待与各界同仁共庆5月20日世界计量日！