The invention discloses a
masson pine bark extract for treating squamous
cell lung carcinoma as well as a preparation method and a composition of the
masson pine bark extract. The preparation method of the extract comprises the following steps: (1) smashing
masson pine bark till the size reaches 200-800 meshes, thus preparing masson pine bark
powder; (2) at 4-25 DEG C, adding water into the masson pine bark
powder, and soaking for 1-10 h, wherein the
mass-to-volume ratio of the masson pine bark
powder to the water is between 1 to 2 and 1 to 15; (3) carrying out ultrasonic extraction on the masson pine bark powder water soaking solution for 5min-2h, and filtering to prepare masson pine bark water extract solution; and (4)
drying the masson pine bark water extract solution. The masson
pine bark extract contains the active ingredients including
polyphenol, total alkali and
polysaccharide, has the effective rate reaching 95.75-99.66% in treating moderate or advanced squamous
cell lung carcinoma, and has the advantages of small toxic and side effects, high safety and the like.