The therapeutic effect of acupuncture is often closely related to the improvement of microcirculation. Acupuncture stimulation can adjust pathophysiological changes of microcirculation in the human body through multiple ways

multiple links and multiple levels

healing disorders at last. Laser speckle contrast imaging(LSCI)

an emerging technology

can be used to study the effect of acupuncture on microcirculation. In this paper

retrieving the related literature published in recent years

we found that LSCI technology has already been applied to the following aspects 1) acupoint-viscera and microcirculation

2) stimulation-induced transmission of sensations along the meridian and microcirculation

3) non-meridians or non-acupoints and microcirculation

4) specific acupoints and microcirculation

as well as 5) different acupuncture needle manipulations and microcirculation. However

most of the studies focused on animal experiments and healthy subjects

observing microcirculatory effects under normal physiological conditions

and the sample size of participants was smaller. In the future

we highly recommend that increasing the sample size and further studying the local microcirculation are necessary in the pathological state of diseases.