The invention provides an Internet of Things system for monitoring and analyzing pet health information. The system comprises a subject terminal, an object terminal, a mobile phone client, a data processor and a database server, the data processor performs data information interaction with the subject terminal, the object terminal, the mobile phone client and the database server. The main body terminal comprises a main body temperature sensor, a main body environment temperature and humidity sensor, an acceleration sensor, an intelligent sleep monitor and a sound sensor. The object terminal comprises an object environment temperature and humidity sensor, an infrared sensor, a gyroscope, a positioning instrument, a counter, a weighing device, a formaldehyde/ammonia/carbon dioxide concentration monitor, a sound box and a network camera. The database server comprises a basic information database, a subject information database, an object information database, a difference information database and a communication information database. Information interaction is performed on the subject terminal and the object terminal through the APP application, so that informatization management of an owner on a pet is realized.