Uniform infusion device capable of preventing blood backflow after infusion is finished

The invention relates to the technical field of medical treatment, and discloses a uniform infusion device capable of preventing blood backflow after infusion, two closing magnets are fixedly connected to the bottom of a needle head, a speed regulating device is fixedly connected to the bottom of the needle head and located in a device shell, and temperature regulating devices are arranged on the opposite sides of two reminding devices. And air pressure balance pipes are arranged below the two closing magnets. According to the uniform infusion device capable of preventing blood backflow after infusion is finished, when an adjusting block moves downwards, a shifting block moves downwards to the position below a reminding block, in the process that the adjusting block gradually moves upwards, the shifting block drives the reminding block to move upwards, the reminding block can press a sensing plate downwards, the sensing plate drives limiting teeth to move upwards through a connecting rod, and when an infusion