Dr. Harry Willis Miller, 97, a medical missionary and surgeon who treated the noted in this country and abroad, died Saturday in Riverside, Calif.

Known as the "China Doctor," he spent almost four decades on the China mainland, as well as in Formosa, Japan, Malaysia, Singapore, Libya, Trinidad, Manchuria, Okinawa and the Philipines.

Dr. Miller had been a physician to Generalissimo and Madame Chiang Kai-sehk and Chou-En-lai.

He had had close association with many important Americans as well. While serving from 1913 to 1925 as director of the Washington Sanitarium in Takoma Park, now Washington Adventist Hospital, he was the private doctor of William Jennings Bryan and Alexander Graham Bell.

He also was a consulting physician to President Taft Wilson and Harding and had worked closely with Herbert Hoover on European relief following World War I.

Noted for his skill as a thyroid surgeon, Dr. Miller was a pioneer in the field of nutrition. He perfected the process of extracting milk from soybeans, which helped alleviate starvation in many Aisan countries.

He built the Shanghai Sanitarium and Hospital, which was the first Adventist medical institution outside this country.

In the 1960s, Dr. Miller established the Hong Kong adventist Hospital. He remained in Hong Kong, practicing surgery and holding a weekly clinic until 1974, when he moved to California, where he continued to be active in nutrition research.

Born in Ludlow Falls, Ohio, Dr. Miller recieved a medical degree from the American Medical Missionary College in Battle Creek, Mich., in 1902. The next year he was sent by the Seventh-day Adventist Church to Central China as a missionary. He founded the China Missionary College in Hong Kong in 1910.

He is survived by his wife, Mary Greer Miller, and four children.